Newbie - Intersect with Selection

Hi all,
I'm a total new to PS and trying to help a friend out. What I'm trying to do is colored three different color inside an arc line. Here is work in progress thing. I can separate the bottom part only by using Make Selection> Intersect with Selection. But when I tried to do for the top or middle part, only New Selection is available - nothing else.
Am I doing something wrong or missing?

FYI - this friend found the template on the net and bought it. But the template was never received and no communication from them either. After looking at the gif - I thought it's easy, but when actually started it, it's not :D

Try this:-
Starting from the image in your link, de-select everything (CTRL + D)
Click 'New Selection' icon.
Click in white area with 'Magic Wand' tool to select all the white.
Click 'Subtract from Selection' icon.
Click 'Rectangular Marquee' tool, create a rectangular selection in the area of your image where you want one of the colours to be. This will subtract from the selection and leave you with part of the white selected and part un-selected.
You can now colour the selected area with 'Paint Bucket' tool or Edit>Fill.
De-Select everything (CTRL +D)
Fill the remaining white area with colour using 'Paint Bucket' tool

Thanks for the reply Wano.
But it only works in that jpg. When I tried to do that in psd format I couldn't get magic wand to just select white portion.
Ok - these are the steps I used -
1) I strated a new with 1024x768 with background color, which is black.
2) Then, used eclipse tool with fill pixel to create two parts - LHS with foreground color and RHS with black
3) Then I use rectangle tool, Make Selection> Intersect with Selection and colored with different color on the middle part.
4) When I tried to the same again for the bottom part - all I've got is New Selection and the rest were grayed out.

I've been mucking around with PS and found another way - that is very close to what she wants - I think, knowing women - no offence, if there is any ladies :D :D

I did step 1 and 2 like above.
3) Then I choose Fill Pixel, with Color as Mode - change the foreground color to what I wanted via color picker. And after I use Rectangle Tool to draw - it came out as I wanted, but the color is different to what I selected. I'm not sure what I did wrong?

These are the colors that I want to have.
And this is what I got.

Okay, I think your problem may be that you're using the ellipse and rectangle tools set to 'Shape Layers' to draw your shapes. I can get the effect you're after by using paths instead. So try this:-

Starting with a new blank document.
1 Choose 'Ellipse' tool and set it to 'Paths' in the toolbar. Draw the ellipse

2 Go to 'Paths' palette and CTRL-click on the 'Work Path' icon. This will turn the ellipse path into a selection.

3 Choose the colour for the bottom portion of the ellipse (your gray) and click inside the selection with the 'Paint Bucket' tool. This should give you a full gray ellipse.

4 With the ellipse still selected, choose 'Rectangle' tool and set its mode to 'Subtract from selection' Draw the rectangle to give the band across the middle of the ellipse. The work path in the 'Paths' palette will now have changed to show the new path. CTRL-click on the work path icon again, and the middle portion of the ellipse will now be selected.

5 With the middle selected, choose the colour for the middle portion of your design (your blue) and click in this area with the 'Paint Bucket' tool to change the colour to blue.

6 CTRL + D to de-select everything

7 Choose a colour for the top portion of ellipse (your purple) and click in the top area with 'Paint Bucket' tool to turn this area purple. (you do not need to have anything selected to do this step)

8 Choose black and click outside the ellipse area to turn the background black.

Hope this works for you. Would be a hell of a lot simpler in Illustrator! ;)

Dude - You rock!
It worked Thanks alot
How easy would be in Illustrator? As I said before, this is for a website template and most of the samples I've seen are psd - that's why I assumed that they were created with PS, slice and dice them and export them. :p

Glad it worked. My comment about Illustrator was a little off the cuff! I only meant that the method seemed a bit long-winded. Illustrator deals in paths all the time, and has a dedicated palette, the Pathfinder palette, that produces various intersections and subtractions. Problem being that you would have to learn Illustrator, which is a lot less intuitive and, in my opinion, harder to learn than Photoshop.

If you're designing for web (which I admit I know very little about) you're probably better off sticking with Photoshop, cos you've got ImageReady already loaded.