Allright here's my entry for ur lighting challenge! I made use of the window hole u made in the wall, hope u dont mind

I used 3 diff exposure levels rendered in seperate passes. The whole thing relies heavily on TA. No IBL was used çuz it rendered hella slow and still left ugly shadows plus the lighting wasnt satisfactory.
Compositing, window glow and curves done in photoshop.

Lemme know what u think

oh btw, total rendertime was around about 6 or 7 hours for all passes and masks in total on a system with 2 dualcore opteron 270's and 4gb's of ram.

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