Vergas
http://www.newegg.com it has good motherboard best brands are Asus and MSI. If you are looking to build a computer I can build it for you online and give you all the information and how much you are willing to spend and i will try my best. PS i just built a computer for 550 that runs CS:S half decent need a diff video card for good.
IF you are willing to spend like 900 i can get you a kick ass comp. Assuming you dont need a new monitor/mouse/keyboard.
Best Companies for Comp Parts:
RAM = Corsair XMS Dual Channel
Motherboards = Asus / MSI
Hard drives = Maxtor/ Seagate (I perfer Maxtor) sata
Cases = Antec/Aspire
PowerSupplies = Antec/Aspire/Thermaltake
Fans/Cooling = Thermaltake / Antec dual ball bearing for fans
CD/DVD Roms = Plextor/Asus/ Nec
Floppy = Nec / Sony
Monitors = Nec
Processors = AMD (With exceptions of P5 Prescott chips, which I like better)
Video = ATI / Nvidia (ATI is first 'cause of alphabetical order, and i like it better)
Sound = Creative / Turtle Beach
Speakers = Altec Lansing / JBL
Mice/Keyboard = Logitech
Printers = HP and only HP
Laptops = IBM