Assuming there is nothing in the existing ubuntu install you wish to keep...
Boot from the Win 7 DVD
Advanced
Select each partition, and Delete
Eventually, you're left with one large unallocated space
Let Windows use that, creating what it needs.
Assuming there is nothing in the existing ubuntu install you wish to keep...
Boot from the Win 7 DVD
Advanced
Select each partition, and Delete
Eventually, you're left with one large unallocated space
Let Windows use that, creating what it needs.