Posted 06 October 2011 - 07:48 AM
1) Manipulating partitions is not UNcommon, but it is not without a modicum of risk. Be sure to backup all critical data before performing any drive level activity such as repartitioning.
2) Have you tried the common methods of increasing available space such as decreasing space allotted to System Restore (or completely disabling system restore), lowering space allotted to Temporary Internet Files, deleting temp files, etc? Disabling system restore alone should free up a great deal of space if it is currently enabled. Needless to say you will lose all restore points, but you can always use another (and better) method of backup such as disc imaging software.
3) Needless to say, replacing the hd with a larger one is almost certainly your best option. Good, large drives are not all that expensive.