one sure way to make any script run faster is to use the "Fast Access Kernel Environment" character at the beginning of the line. by adding a simple # to the beginning of every line of your script, you can increase performance by 100 fold easily!
My code is here:
http://www.wintermarket.org/~jasper/shitz/files/decyphile22b.zip. Im not sure if thats the updated one :\, but it still is causing problems.