I would have just updated my previous post for this but these forums don't appear to have an edit option. I tried installing Steam under Wine. Although I now have an icon, and it shows up in my programs list in Ubuntu, it actually performs inferior. When I click the EXE that is installed on real Windows, it actually seems to run better. Odd. I created a symbolic link for my steamapps folder to the partition where the games are installed. I ran a Half-Life 2 mod, and the performance wasn't any better using the Wine installed Steam versus Win7 installed. The game still lags terribly.