Tight Space on Server C: Drive

One of my Windows 2003 Servers is running short of space (1.3Gb) on its c: drive. There are three physical drives in a RAID 5 config. partitioned into c: and d:.

There’s very little that can be removed from c: but plenty of space on d:.

The machine has 4Gb RAM. There’s a 2Gb Page file on c: and 4Gb on d:.

Can you help with the easiest / most successful way, to change the partition sizes without losing anything? It’s running Windows 2003 Standard Edition SP2

Many thanks

Kim