"cleaning" a string

Question

I need to strip special characters out of a string field.  Anyone know of a function or technique in Crystal Reports (XI R2) that can evaluate a string and return only the letters?  The characters themselves can vary and can occur more than once in the string.  Example: I have "Jennifer Hanson_CPA #" and would to extract "JenniferHanson" or "Jennifer Hanson".  Any suggestions would be appreciated.

Answer 1

Thank you.  That loop works well.  Needed to add a line to reset result variable to blank so it didn't swell.  Was getting results like this:
Jimmy Nuetron
Jimmy Nuetron Larry Ellison
Jimmy Nuetron Larry Ellison Marc Beniof
Final code is this:
stringvar strval:= {Sheet1_.Name};
stringvar array schars:= ['#','%','+','_','.','-']; 
stringvar res;
numbervar i;
res:= '';
for  i:= 1 to len(strval)
do
if not (strval<i> in schars)  then
(res:= res & strval<i>;);
res;
thanks again!!
Edited by: Darrin Farnsworth on Nov 24, 2008 11:10 PM