This will be my second build, mostly for business applications and occasional gaming. I also prefer a nearly-silent PC. Please offer some suggestions if possible... Also, how much can I OC this baby to? 
Case:
Antec Three Hundred
Motherboard:
ASUS P7P55D-E Pro
CPU:
Intel Core i5-750 2.66Ghz
Heatsink/fan:
ZALMAN CNPS9700
Video Card:
XFX HD-577A-ZNFC Radeon HD 5770 1GB
PSU:
ORSAIR CMPSU-650TX 650W
Memory:
G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
HD:
Western Digital Caviar Green WD20EARS
SSD:
OCZ Vertex 2 60GB
Case:
Antec Three Hundred
Motherboard:
ASUS P7P55D-E Pro
CPU:
Intel Core i5-750 2.66Ghz
Heatsink/fan:
ZALMAN CNPS9700
Video Card:
XFX HD-577A-ZNFC Radeon HD 5770 1GB
PSU:
ORSAIR CMPSU-650TX 650W
Memory:
G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
HD:
Western Digital Caviar Green WD20EARS
SSD:
OCZ Vertex 2 60GB