I'll tell you right off the bat that without a fresh reformat and reinstall of Windows, your old drive won't work in your new PC.
Some other things:
*Do you really need a sound card? 90% of people find that onboard works just fine.
*About that motherboard: don't. The chipset is not that great and I'm not a Sapphire fan. You could do much better with the DFI Lanparty family of boards in the same price range which use the nForce4 chipset (highly superior to the ATI chipsets), is incredibly overclockable, and is very stable.
*Raidmax DOES NOT make good PSUs. You'd be better off with Antec, PCP&C or Fortron.
*On the RAM: will you be overclocking? If so, you'd be better off with the highend OCZ RAM. If not, you'd probably be better off with Corsair Value---very good stuff.