I have been trying to figure out how repartition my c: driv

I have been trying to figure out how repartition my c: drive partition.  I have a 160 GB HD partitioned into 4 40 GB drives.  The c: drive is telling me that I am running out of space.  I have at least 20GB free on the d: E: F: drives.  I can take 10 GB from each of those drives and put them onto the C: drive.  Can you help me do this using your remote access?  Thank you.  I can be reached by phone at 484-497-5994