I'm building my first computer and I have chosen all the parts (have not bought any yet) and I wanted to make sure all the parts are compatible.
Motherboard
ASUS A8N5X Socket 939 nVidia nForce4 ATX
http://www.newegg.com/Product/Product.asp?item=N82E16813131569
CPU
AMD Athlon 3800+ 2000MHz
http://www.newegg.com/Product/Product.asp?item=N82E16819103531
Case
Xion II Black SECC Steel ATX Mid-Tower 450W PSU
http://www.newegg.com/Product/Product.asp?Item=N82E16811208008
Hard Drive
Seagate Barracuda 7200.10 320GB 7200 RPM
http://www.newegg.com/Product/Product.asp?Item=N82E16822148139
3.5" Floppy Drive
Sony Black Internal Floppy Drive
http://www.newegg.com/Product/Product.asp?Item=N82E16821103116
CD/DVD Drive
Sony 16x DVD-ROM 48x CD-ROM
http://www.newegg.com/Product/Product.asp?Item=N82E16827101131
CD/DVD Burner
Sony 16x DVD+R DVD+RW 8x DVD-R 6x DVD-RW 48x CD-R 24x CD-RW
http://www.newegg.com/Product/Product.asp?Item=N82E16827131031
Memory
Corsair XMS 2 GB (2 x 1GB) 184-Pin DDR 400
http://www.newegg.com/Product/Product.asp?Item=N82E16820145486
Graphics Card
XFX GeForce 7600 GT 256MB GDDR3 PCI-e
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1931185&Tab=2&NoMapp=0
And as a replacement for the case's PSU
Ultra X-Finity 600W ATX
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1273341&Sku=ULT31848
Also, what kinds of fans/cooling parts should I have?
Motherboard
ASUS A8N5X Socket 939 nVidia nForce4 ATX
http://www.newegg.com/Product/Product.asp?item=N82E16813131569
CPU
AMD Athlon 3800+ 2000MHz
http://www.newegg.com/Product/Product.asp?item=N82E16819103531
Case
Xion II Black SECC Steel ATX Mid-Tower 450W PSU
http://www.newegg.com/Product/Product.asp?Item=N82E16811208008
Hard Drive
Seagate Barracuda 7200.10 320GB 7200 RPM
http://www.newegg.com/Product/Product.asp?Item=N82E16822148139
3.5" Floppy Drive
Sony Black Internal Floppy Drive
http://www.newegg.com/Product/Product.asp?Item=N82E16821103116
CD/DVD Drive
Sony 16x DVD-ROM 48x CD-ROM
http://www.newegg.com/Product/Product.asp?Item=N82E16827101131
CD/DVD Burner
Sony 16x DVD+R DVD+RW 8x DVD-R 6x DVD-RW 48x CD-R 24x CD-RW
http://www.newegg.com/Product/Product.asp?Item=N82E16827131031
Memory
Corsair XMS 2 GB (2 x 1GB) 184-Pin DDR 400
http://www.newegg.com/Product/Product.asp?Item=N82E16820145486
Graphics Card
XFX GeForce 7600 GT 256MB GDDR3 PCI-e
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1931185&Tab=2&NoMapp=0
And as a replacement for the case's PSU
Ultra X-Finity 600W ATX
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1273341&Sku=ULT31848
Also, what kinds of fans/cooling parts should I have?