Gaming PC Suggestions

hi,

I am building a gaming pc (mostly for wow) and i have a couple of questions. I want to add cold cathodes since the case has meshy windows. Do i need to get a better power supply because of that? Also for internet... wired is not an option so i need a wireless adapter. Anything that would work good with wow and works with windows 7 64-with with a wirless-g linksys router.

this is what i got so far:

DVD: http://www.newegg.com/Product/Prod [...] 6827136177
Case- HEC Blitz Black Steel Edition ATX Mid Tower: http://www.newegg.com/Product/Prod [...] 6811121096
HDD- SAMSUNG Spinpoint F3 HD502HJ 500GB: http://www.newegg.com/Product/Prod [...] 6822152181
MOBO- ASRock M3A770DE AM3 AMD 770 ATX AMD Motherboard: http://www.newegg.com/Product/Prod [...] 6813157176
Video Card- PowerColor AX5770 1GBD5-H Radeon HD 5770 1GB: http://www.newegg.com/Product/Prod [...] 6814131330
Power Supply-Antec EarthWatts EA-500D Green 500W: http://www.newegg.com/Product/Prod [...] 6817371035
Memory- Mushkin Enhanced Essentials 4GB: http://www.newegg.com/Product/Prod [...] 6820146748
Processor- AMD Athlon II X3 450 Rana 3.2GHz: http://www.newegg.com/Product/Prod [...] 6819103886
OS- Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders: http://www.newegg.com/Product/Prod [...] 6832116754