problems with the right ram...

was wondering what kind of ram i might nead for my mother bord i ordered a pc2100 DDR 1gb stick of ram. problem is when i instaled it all my computer does is lode up then reboot. then askes me if i want to start up in safe mode ect....
ok so im thinking i messed up big time. so im asking for a little help how i can tell what ram my mother bord neads. heres the link on the specks. plz dont send me to another web page for me to figure it out on my own lol it wont work....

http://www.intel.com/design/motherbd/rg/

and this is the web page where i got my ram at.

http://www.pricewatch.com/memory/4005-1.htm

oh ya HELP!!
lol....