While we don't recommend breaking your workplace rules, since it could get you fired, it is rather easy to bypass DNS. Each system has a 'hosts' file located in the c:\windows\system32\drivers\etc\ folder, you would place an entry like this into that file:
216.178.38.131
www.myspace.com myspace.com
This will allow your system to resolve the host without using DNS.
Again, it is strongly recommended that you think before you act, as most for most companies changing these files is a fireable offense.