Bridge connection - Win7 host to WinXP

Hey there.
We have a slight problem getting a bridge connection working.
We are stationed at a school apartment complex, with free use of internet.
Though, you have to set it up by following the DNS/IP Config applied.
By that, my mate moved to my room with my computer, and we only got 1 hub, but no switch, so we are trying to bridge connect.

We tried nearly everything. I can detect something is there, but the connection cant seem to run through.
What can be the problem?

Thanks in advance,
yours sincerely, Nulbit aka Mikael B. Jakobsen!

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