resizing woes!

Hello.
I designed a form in photoshop for somebody. I chose A4 size for the canvas from the preset sizes, but the problem is that I need to send it to the other person to print (I don't have a printer and they don't have photoshop).

I thought I'd save it as an image and send it to them to print out, but the image is huge (image->image size shows the document size as 21*29.7 cm but the pixel dimensions as 2480*3508 px).

My only choices (in the dropdown box), for changing the image size requires me to use either pixels or percent.
I'm a bit confused as to why A4 size isn't A4 when you convert it to an image. Please could someone give me some pointers as to how I can change my PSD to an image that is A4 size, or any better ways to be able to achieve what I'm trying to do.

Thanks
Neil

well if you print the image, it will be 21*29,7 cm. By default Photoshop uses 300 dpi for the A4 size you choose when you make a new dokument.
If you change the dpi to like 72 (for web) the size of the image would be 595*842 px, but still 21*29,7 cm.
It all depends on how many dots you want on each inch when printed...

Thanks, that's cleared up one point
but I still have a problem with export size:

If I export it as a gif (and then re-import that gif to check it's size), I can see that it's got the same pixel dimensions as the original PSD, but that the actual document size of the gif is now 87cm*123cm (aprox), and no longer 21*29.7 like I want it to be.

Because I can't print directly from photoshop I need to be able to send a picture that's 21*29.7 as intended - I'm assuming that the other person will view the picture in IE and then use the print option from there to print it out. If the pic I send is 87cm*123cm it tries to print it at that size, which is way too big and not what they want at all.

I could resize the picture itself, but then I get bad pixelation. What I can't seem to do is output a gif directly from the PSD that is A4 sized.

If I play around with the dpi I can see that it changes the pixel dimensions, but how do I know when those dimensions (measured only in pixels or percent) are equal to what I want in cm?

I had guessed that choosing A4 would mean I could easily output an A4-sized picture but I can't. This is what I'm trying to do though. Maybe I'm missunderstanding what you meant. I'm pretty new to all this. If I am then sorry.

Cheers,
Neil

also in line with this if your printing it
I find that tiff's with cmyk are best for printing the file size is a bit large but you don't get much color loss and it the size out perfectly.

also! welcome to the forum amigo

GIFs don't save DPI info, so you'd get the full 72dpi screen res. for printing instead if you do it that way.