]Windows networking is windows networking and they usually build that stuff backwards compatible. Thats for the automated crap, anything not automated in the older version they tend to allow you to make compatibility disks to set up the older computer. As far as that router goes, why would it not work?
If I was giving out hardware advice I would advise you to move away from the AMD processor and get an i7 from Intel. I would also go with DDR3 as DDR2 is getting phased out slowly. Oh and I have never been a fan of those caviar blacks since WD burned me on replacing one. They claimed I damaged it, it was DOA possibly shipping damage.