When I installed my OS, XP Pro retail, I set up a 20gb C partion just for the OS, a 44gb D partition just for programmes and the rest of the space as an E partion for documents, photos and music all on a 160gb drive. Now I find I am running out of space. I have installed another 300gb HD so can transfer photos and music from E to new drive releasing space on the 160gb drive. The C partition with the OS on only has 600mb of free space left and the D partition only has 4gb left. What is the easiest way to utilise the free space. I have done a search on partitions and it all looks a bit risky moving partitions etc. Any suggestions?