Extend existing Partition within Windows Server 2008 R2

Hi,

We are in urgent need to increase the partition of Drive:C in Windows Server 2008 and as File Server and Domain Controller has already been configured and in use for quite a long time, this will create havoc in the current situation.

So, I am interested in knowing a full proof tech tips for my above query, means can we increase the partition of Drive:C in Windows Server 2008 R2.

Hope to get helpful response from you guys.

With Thanks,

AMIT K JHA.