Windows 7 - Win7/Vista dual-boot ?

I have a Gateway desktop that came with Vista32-bit Home
Premium oem. It sits on C:\drive. The other day using my Windows 7 upgrade dvd I installed Windows 7 to my J:\drive which had Windows 7 rc 7100 on it-----this was accomplished by booting from the dvd formatting the j:\drive and installing Windows 7 without entering product key. After the install completed I inserted the dvd while in Windows 7's desktop and performed an inplace upgrade this time entering the product key and so had an activated Windows 7.

I don't want a dual-boot Windows system and have decided to remove the Windows 7 install and do an inplace upgrade of my Vista(C:\drive) I need to do this because if I did a clean install I would lose several programs that came oem.

In disc management what is the best thing to do
to my Windows 7 partition. Quick format the volume or just delete the volume?

Post a screenshot of disk management so we have complete understanding of system which enables us to advise with best accuracy, please.

Here you go. C:\ is Vista

Your case is simple. Quick format J: to NTFS. Use Easybcd to remove the bcd entry to J's Windows 7 so the boot choice screen will be gone.

Or you could delete J partition and combine with other free space already shown to make one larger partition.

That's what I thought. Thanks a bunch.