Partitioned Hard Drive

[02bin3]

I have what I assume is a partitioned hard drive in my Lenovo Vista 32 bit laptop.  I am getting messages that my drive C is full and I have to get rid of some files.  I put it through the CCleaner and got rid of some but apparently not enough.  It shows that Drive C has 29.5 GB of space and that is all taken up, however, Drive D has 105 GB of which very little has been used.  I've tried to move files to Drive D and the computer really doesn't want me to Cut & Paste from the Program Files to try and move them.  Is there an easy way to do this or to remove the partition so that there is just one Drive C and no Drive D or to make Drive D primary and have all downloaded programs go to Drive D?
         Thank you,

[patio]

Post a screenshot of Disk Management...
Normally on most laptops the D:\ drive contains the Recovery Partition...which you don't wanna mess with just in case of a crash.

[Calum]

You can't really move installed programs between partitions or drives.  If the D: drive is not the recovery partition, which some are, it will be a data partition, and I would assume this to be the case due to the size of it - however, to be sure before proceeding, a screenshot would be best.
Realistically, you need to find out what's actually taking up the space - is it programs?  Movies?  Music?  Photos?  Files can be easily moved, programs would need to be uninstalled and reinstalled in the new location.

[Computer_Commando]

Delete old System Restore points.
Recovery partition takes the place of CD's no longer being supplied.  If the hard drive fails, you have nothing.  Image backup the entire hard drive.