[Solved] New MOBO and CPU install?

I've been looking through some threads but cant find a really good answer for me, im planning on upgrading my M2N ASUS motherboard to a Gigabyte MA785GM-US2H Motherboard and upgrading the processor from an AMD Athlon X2 3800+ 2.0GHz to an AMD Phenom II X2 545 3.0GHz. I have windows installed on my 160 GB drive and i have the DVD so i can do a fresh install if i need to, since windows is the only thing on my 160GB drive but my 1TB drive has everything on it. So when i upgrade my MOBO and CPU do i just reinstall windows on my 160 GB and that should be fine right? I wont lose anything on my 1TB drive as long as i dont put windows on it correct?

-PS- Also im upgrading my video Card soon from the x1300 to a XFX 4890 1GB FDDR5, and i know if i upgrade it soon my processor is most likely going to bottleneck the 4890, so should i wait to upgrade my graphics until i get my new mobo and cpu installed?








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-Raidmax Smilodon Case
-AMD Athlon X2 3800+ 2.0GHz
-ASUS M2N Mobo
-4GB OCZ Fatality DDR2 800
-160GB SATA + 1TB SATA
-ATI Radeon X1300 256mb DDR2 (upgrading soon)
-500Watt PSU

thanks, i want to do my upgrades, so im going to buy the MOBO and CPU my next paycheck, then the one after that ill just upgrade my graphics card, thanks for the advice