Repartitioning hard drive vista without losing data

*****Backup your data first before doing this. I can't garantee that it will work properly*****

I can't really think on how to do it. I know that you can do the C drive without affecting data on it, but D drive is I think is a bit...impossible..unless if you delete the partition (in which delete everything on it) and then expand the C drive, then create the empty D drive again...

You might try getting a software off the internet and then burning into a CD and then boot the computer from the CD and repartition using that software. Its called GParted, inside a live CD Linux (sorry for my messy english). You could start by downloading, burning, and running "SystemRescueCD". After running the SystemRescueCD, wait until its ready then type StartX. Now have a look around the desktop that you get and look for GParted.

Select your hard drive, and it should show two partitions. Modify it (I can't remember how, should be like click-and-drag) the D Drive and make it smaller, then drag it to the end, then drag the C drive bigger. *****

But it is not garanteed that it will work with your computer. If typing StartX blanks your screen and then it sends you back to the "command prompt" like screen, then I don't know how to go from here

*****Backup your data first before doing this. I can't garantee that it will work properly*****