I have vista business 64 bite want to upgrade to windows 7 what edition of windo

If you want to do an inplace upgrade (retain all programs and data) you will need the Windows 7 Profesional Upgrade (this is the W7 equivalent of Vista Business), or Ultimate 64 bit version. Both 32 bit & 64 bit disks are in the upgrade box.
It appears you don't really need either of these and the W7 Home Premium would do all you want. In the long run a full retail version would be better value for you, and probably cost no more.
The Windows 7 Home Premium $199.99 on the Microsoft website, the Windows 7 Profesional Upgrade $199.99
http://windows.microsoft.com/en-US/windows/shop
The advantage of the full version, no prior OS required, you can upgrade your computer, including change m/board & cpu or remove it from the current computer and reuse it on a new one if you so wish.
The disadvantage (not really) is you need to backup and reinstall all your programs, which is actually a good thing to do.
If you decide to do this, use the Windows 7 Easy Transfer Wizard to save all your files and settings, don't use the one in Vista.
To use the W7 Easy Transfer Wizard:
Open the W7 DVD drive on your computer find and click migsetup.exe in the Support\Migwiz directory
After completing your new instalation and reinstalling programs, you can restore the WETW file.