Magnify or zoom a selection

I'm trying to make a magnifing glass on an image and I've done this once before, but can't figure out how I did it. I want to make a selection and magnify or zoom the background just in that selection. I remember that it was a very simply thing. I thought maybe a filter, but I can't find it. Can anyone help? Thanx!
btw...I'm using PS 7/Win OS if that matters.

Try selecting what you want to magnify and go to "Filter->Distort->Spherize". This mimics the zoom effect you get when looking through a magnifying glass. If this isn't achieving the effect enough, try the optional part.

Optional: You can make the content in the select larger before you Spherize it by going to "Edit->Transform->Scale".

I appreciate your input. I gave it a try, but that didn't give me the effect I was looking for. I was almost sure it was a filter, but I think I've looked through everyone with no luck.
Anyone else know? Thanx again!

How about just the Transform->Scale?
If not, could you go into more detail on what you want?

Thank you so much for your interest in helping me with this. I found alot of PS forums out there, but not many of them have ppl that want to stick with someone's problem to help them out.
I wish this forum had a way to attach an image. I don't have any web space to link an image, so I'll do my best to explain. I'm trying to replicate what you would see if you were to hold a magnifying glass over a photo. The photo would be at one scale while the selected area would be magnifyed and maybe a slight bloat to it. I think you already have the right idea, because your suggestions will achieve this result. Scaling the selection works as long as the image is high res. If it isn't, the selected area becomes really pixelated. I may be wrong, but I thought when I created this effect before, it looked as if the selected area was resampled, so the image didn't distort much.
I hope that helps. Thanx again!

You may have used KPT3 interface. inthe interface of that plug-in, there could be a magnified area displayed.
Indeed, you will need to have a high resolution area.

But Photoshop will use resampling if you enlarge one area...

If you email me a picture of what you want, I can upload to my webspace so I, and other users, can see what you mean. Email to [email]allanondruid+fastmail.fm[/email]. Replace the + with a @, obviously. I'm not sure if email spiders crawl these forums...I'll get it up as soon as I can.

why not duplicate the layer with your image, scale one down and cut the selection from the one on top (not the one scaled down)...that way the remaining thing will look like a magnification of the layer below.

Come to think of it, I might have done this on a totally diff. machine. I took a digital imaging class and they had G5's using PScs and not sure what extras they had loaded. I don't know if this will work, linking to geocities but I'll give it a try.

HERE

Your suggestions will work. I think I'll stick with what works and stop trying to find something that might not even be on my machine. Thanx!

Hmm...It looks to me like they did what mihai suggested. And you might want to edit that link and take off the ? after the .jpg, so people can view it without editting the filename ;)