Split a string on certain poitions.

[Tequila_worm]

I'm trying to split a string on certain positions such as the following code.

dim catID, parID
 
catID = 3
parID = "1a1a11a1"
 
dim intX =  0 to catID
  if intX = 0 then
     'Grab the numbers from the first a and all numbers before it
     'the one before the first a can also be a numbers like 243a
  if intX = 1 then
     'Go to the second a, don't grab the a but grab everything before it.
  if intX = 2 then
     'Go to the third a and don't grab the a but grab everything before it.
next

Please if anyone could help with this it would mean the world to me. I've been stressing over this for days , thanks alot for the help guys/girld.

Ed.