as for the heat/humidity problem...
get a lamp and put one of those black heat lights in it...put it over your tank and keep it on 24/7 to keep the hot side at a stable temp.

get a towel (or small rag) and re-wet it daily. If you havn't gotten a digital temp/humidity guage, they're like $15 at wal-mart (found mine next to the light bulb section) that way you can accurately keep an eye on temps and humidity. if temps get too high, unplug the heat lamp (but of course, keep some belly heat), and if the humidity gets too high from the towel, just fold the towel over one or 2 times. let us know how that works for u.