direct ethernet connection from PC to slug

I'm sharing a wireless connection with my neighbor.  This router is upstairs and I cannot plug my slug into it.  Therefore I have an ethernet cable going from my pc (win xp) to the slug directly.  I also have a wireless adapter that I get internet access through.

Now I was able to see the web page for the slug just fine and uploaded the debian installer image fine as well.  I am now at the beginning of the debian install where it's asking for a suitable mirror to use for downloading packages.  But as you may have guessed, the slug, and thus the debian installer cannot see the outside world (the internet).  Can someone suggest how to circumvent this problem?  I tried setting up a web proxy server and letting the debian installer know about it, but that was a no go :(

My ip's are:

wireless adapter:  192.168.0.101
pc ethernet:  192.168.1.66
slug: 192.168.1.77

Any suggestions would be wonderful!