Hi snowshine.
I suppose that the MOBO you are referring to is from your D. 9200. You better read this:
http://en.community.dell.com/forums/t/19257409.aspx
A bunch of guys are installing 8 Gigs of ram in the XPS 410/Dimension 9200 with positive results.
Hope it helps.
PS: Sorry I know is off topic.
Hernan.
Dimension9200/XPS 410, Win XP Pro._x86. SP3, IE 8 & FF 3.6, E6600 2.4GHz, 2GB RAM
Avast Free 5.0.396, CIS 3.14(firewall/D+), SpySweeper 6.1, WinPatrol Plus, WOT.
"We are all ignorant, but we don't all ignore the same things..." Albert Einstein
"When you've excluded the impossible, whatever remains, however improbable, must be the truth..." Sherlock Holmes.