How to Increase Partition having exchange 2003sp2with windows 2003

[mohammad ali]

Dear All,

I have exchange 2003 with windows 2003 and my "C:" partition is
filled, and has only 365 MB remain. The server I am using for exchange 2003
is HP 380 high end server with RAID 5. I had experiment Acronis disk director
server 10.0 at my Dell server which has RAID 5 and install operating system
windows server 2003 sp2, and easily increase my "c:" drive partition with out
any problem. But now I am feeling afraid to do the same thing in my Exchange
2003 server because it is deployed in production environment and one mistake
put me in hell . I need your kind help and suggestion for this issue.
kind regards

Muhammad Ali