Please confirm my puchase!

Hey all, I'm brand new in the world of system building and just got done throwing some components together on newegg. All components are at least 4 star, some are 5. Here is my budget system for $500. (I already have a monitor,keyboard, and mouse.)

Antec nsk4480b with 350w psu http://www.newegg.com/Product/Prod [...] 6811129032

Core 2 Duo e7200 http://www.newegg.com/Product/Prod [...] 6819115052

Kingston Valueram 2x1GB pc6400 http://www.newegg.com/Product/Prod [...] 6820134117

Seagate 250gb http://www.newegg.com/Product/Prod [...] 6822148262

Philips DVD burner http://www.newegg.com/Product/Prod [...] 6827248006

Gigabyte GA-EP35-DS3L http://www.newegg.com/Product/Prod [...] 6813128337

Windows XP home sp3

total is $537 (including shipping)

1.Is this a decent build? Are there any incompatibilities?

2.I have never overclocked, but I understand you need to overclock the Cpu by increasing the fsb speed. But this also increases the ram speed, and I understand the Kingston valueram isn't made for overclocking. Can I get around this by using the "multiplier" thingy?

mushkin 2GB DDR2 800 Cas4 $54 ($36.50 after $17.50 rebate)