hello,
Just though I'd make a note regarding some VB conversions.
to convert an character to it's ascii value Asc( character)
to convert an ascii value back to it's character Chr( 0 - 255 )
Another helpful function to know is 'Mid'. This comes in really handy if... say, you wanted to interate through a string of characters and them out one by one to, oh I don't know... XOR them with another character. =) string = Mid(<string>, <start at>, <length>)

I have a problem to solve programming 3.
I'm not sure in which peaces i must part the text to decode it.
In some cases it's even not possible to part it in peaces with the same size.

I have done it