Bigger corridors?

[Zambaku]

I was hoping for some help with the levelgen script. In the original spelunky, the corridors are often just wide enough to allow a 16x16 sized sprite to pass. I wish to change that a double sized sprite can walk about without hazzle. Aka a 32x32 sized sprite. Note that I'm not good at scripting. I'm mostly a spriter. So Information on how to accomplish this feat would be awesome.

[Kegluneq]

http://mossmouth.com/forums/index.php?topic=628.0
This is actually for adding more spikes, but it deals with the level generation, so it should still be very helpful.

[Zambaku]

Cheers, mate =D