I'd save up a little more..
but here ya go.. i'll start you
on this page and you can go from there.
if you have a psp, a plus to buying sony is that you could use your memorystick duo as a memory card since you already have one prolly. I also tend to not like olympus digital cameras just because they use an icky kind of flash card without direct usb connectivity.
get at least 3 megapixels whatever you get.. sony canon or hp is prolly good.
on those prices, keep in mind that they don't include shipping or tax. but the nice thing about buying online is that a lot of stores won't cost you tax and a lot do free shipping as well. so look around and see if you can find some good choices that don't :D