How do I repartition a hard drive in Windows 7?

"Right-click My Computer and click Manage. On the left side expand the Storage category and go to Disk Management. There you will see all the disks connected to your computer. There will probably be a portion of Disk 0 (depending on your configuration) that has a black bar above it indicating unallocated space. Right-click this and click Format.

Note:
From here you can also right-click any other partitions and shrink, extend, delete, or assign drive letters to them."

Like outsideblasts said you can use GParted to change the partitions and it works great. However, before you destroy your recovery partition make sure you follow all steps from the manufacturer to create your recovery disks.