Agrees with Donchua here...
If u can spend good $$ on a Canon350D, it is worth every cents to protect your expensive investment. It will save you cost for repair and hassles in the long run. If you really is on a tight budget, temporary get yourself an air-tight plastic container and place some silicon gel inside. When u have save enuff $$ then get yourself a dry cabinet.
Check out this thread for more information: http://forum.clubsnap.org/showthread.php?t=135583&highlight=dry+box