This will encrypt or decrypt 'text', it's not super secure, but it's not much overhead.
public function cryption (byval text as string)
dim strtempchar as string
dim i as integer
for i = 1 to len(text)
if asc(mid$(text,i,1)) < 128 then
strtempchar = ctype(asc(mid$(text,i,1)) +128, string)...