Hi guys and merry christmas to u all this is my first post 
laptop is showing its age now and cant play some games that i got for xmas which i am quite sad about, have done some research online and came up with this build
Antec 300 case
modxstream 500w PSU
ATI Radeon HD 4890 1024MB GPU
Gigabyte GA-790XTA-UD4(AM3) PCI express DDR3 M/B
4Gb G Skill Ripsaw DDR3 1333 Main Memory
500Gb western digital caviar blue HD
Pioneer 22x DVD optical drive
Games i will play Operation flashpoint 2 dragon rising, CoD, Left 4 dead 2 and WoW they are my main games
The monitor that i have now supports 1600x900 resolution
I am wondering if the build would be recommended by u guys or if i could go cheaper
also have 2 questions that are bugging me and cant seem to find the answers to
1. I have read that i need a modular PSU with the antec case but one with longer wires and some ppl have wrote that it was a tight fit. Has anyone got this case? if so what PSU do u use?
2. Some people wrote that i might need an aftermarket cooler for the CPU i thought u only needed that if u were going to overclock the system :S pretty confused by it lol and if so what cooler would u recommend for that motherboard?
Regards

laptop is showing its age now and cant play some games that i got for xmas which i am quite sad about, have done some research online and came up with this build
Antec 300 case
modxstream 500w PSU
ATI Radeon HD 4890 1024MB GPU
Gigabyte GA-790XTA-UD4(AM3) PCI express DDR3 M/B
4Gb G Skill Ripsaw DDR3 1333 Main Memory
500Gb western digital caviar blue HD
Pioneer 22x DVD optical drive
Games i will play Operation flashpoint 2 dragon rising, CoD, Left 4 dead 2 and WoW they are my main games
The monitor that i have now supports 1600x900 resolution
I am wondering if the build would be recommended by u guys or if i could go cheaper

also have 2 questions that are bugging me and cant seem to find the answers to
1. I have read that i need a modular PSU with the antec case but one with longer wires and some ppl have wrote that it was a tight fit. Has anyone got this case? if so what PSU do u use?
2. Some people wrote that i might need an aftermarket cooler for the CPU i thought u only needed that if u were going to overclock the system :S pretty confused by it lol and if so what cooler would u recommend for that motherboard?
Regards