administer

I got a subdomain on pastebin.ca for my upcoming site & IRC channel's use. where do i administer it ?

1. How to resize my hard disk partitions without losing any data? Plz suggest a freeware. 2. Is it necessary that an OS should be installed on drive C: ? 3. Whenever I switch on my PC, Win XP SP2 says that the password or username u have typed is wrong. Then i have to click OK and in...