Windows 7 is here. Now what? Which one is right for me? There is a Home Edition, a Professional Edition, and an Ultimate Edition. What about 64 bit? These are some answers I found by browsing the following links.
See a comparison of features at http://store.microsoft.com/Windows7/Compare
If your are currently running a 32 bit OS you can determine if your system can handle 64 bit Window 7 by running the Windows 7 Upgrade Advisor. I all depends on your processor’s capabilities. Just switching to a 64 bit OS can be a significant improvement in performance. It’s worth a shot if you can’t get new hardware right away.
32 bit vs 64 bit FAQ from Microsoft.
Civil 3D 2010 now supports Windows 7.
A word of caution. Object enablers may not be available in 64bit versions. ODBC drivers may not be available in 64bit.