Looking for a new desktop

[Madia]

I am looking for some advice on buying a new desktop. The one I'm currently using purchased in 2001 is:

AMD Thunderbird 1200
384MB SDRAM PC-133
Geforce 2 64mb DDR

I basically want a computer for internet/excel-word/light gaming. I'm looking to spend ~$1000 for a pre-built including a monitor (I still have a CRT). The one I'm considering is a Dell:

http://configure.us.dell.com/dellstore/....aspx?c=us&cs=19&l=en&oc=DE51RF1&s=dhs

My upgrades would be:
1GB Ram
13 in 1 Media Card Reader
Soundblaster Audigy (non-integrated)

One concern I have is the video card. I've installed a video card in the past and don't remember having any trouble doing it (just pulled out the old and put in the new one) but I don't want to spend $130 only to find out that I can't install it. Would I have any trouble installing a new card such as the one linked below on the above Dell system?

http://www.newegg.com/Product/Product.asp?Item=N82E16814130011

Thank you for any help you can offer.

 

[CalvinHobbes]

Take the old one out and put in the new one.
If it's a switch from ATi to Nvidia, just make sure the old drivers are removed and the old card is uninstalled in Windows.