Windows 7 - merge two partitions in vista

Hi I have three partitions windows c, data d, and f. i would like to merge c and f if this is possible d data is for restoring the c drive f is empty thanks for your help.ive attached a snapshot of the drives thx

Delete the F partition, it will become unallocated space, but since it isn't next to C, you may have to add it to D....

If you download and use the Partition Wizard Boot CD, and you really do want to combine C and F, you would have to do the following:
1) Boot from the CD
2) Copy off the contents of F to an external drive (if there is not enough room in C to hold the contents of F)
3) Remove the F partition
4) Move the D partition to the right, to the end of the new unallocated space
5) Expand C to fill the new unallocated space
6) Copy the saved Fdrive contents into C
7) Reboot into Windows

In addition to Mark's good advice, have a look at this Partition Wizard tutorial: Partition Wizard : Use the Bootable CD

thanks for the replys I think i will have a read of the tutorial, should be able to get it sorted many thanks again