I did a quick search online for "memory upgrade Dell Dimension 4500" and found this link. It's probably correct, but you may want to check a couple of places or even dell.com
http://www.edgetechcorp.com/memory/upgrade.asp?cid=18805
If it's to be believed, you can fit 1Gig (2 x 512Mb). I'd definitely do it.
$20 is a decent price. Get 2.
__________________
Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa
SOLD 2004 - gone but not forgotten