headache.

I'm trying to strip unwanted characters from some data. the first item 
is a name or indeterminate elements. for example, "Frida Hyvonen" or 
"Orchestral Maneuvers in the Dark". 

I want to end up with "FridaHyvonen" or "OrchestralManeuversintheDark". 
So I have subroutine, the one below, and it does this part just fine.  
When I repeat the same process to cleanse a date value in a similar way, 
for example to turn "Saturday, February 16, 2008 12:15:46 PM" into 
"Saturday,February16,200812:15:46PM", that works.

BUT! if I then take "Saturday,February16,200812:15:46PM" and try to 
strip the commas, I get:
"Saturday February16 200812:15:46PM" which is not what I want. I want:
"SaturdayFebruary16200812:15:46PM", and eventually, I want to get to:
"SaturdayFebruary162008121546PM", but when I try to run the subroutine 
again, to strip the spaces, I end up with:
"Saturday,February16,200812:15:46PM"

The subroutine that should do all but the last operation is below. Any 
idea why I keep getting either the commas or the spaces, no matter what 
I do?

on ShaveMyFileName(MyFadeDate)
   
   set MyShaveItem to MyShowName as text
   set this_text to MyShaveItem
   set search_string to (ASCII character 32)
   set replacement_string to {}
   set MyFadeName to my replace_chars(this_text, search_string, 
replacement_string)
   display dialog MyFadeName
   
   set MyTrimTime to MyFadeDate as text
   set this_text to MyTrimTime as string
   set search_string to (ASCII character 32)
   set replacement_string to (ASCII character 0)
   set MyTrimTime to my replace_chars(this_text, search_string, 
replacement_string)
   display dialog MyTrimTime
   
   set MyTrimTime to MyFadeDate as text
   set this_text to MyTrimTime
   set search_string to (ASCII character 44)
   set replacement_string to (ASCII character 0)
   set MyTrimTime to my replace_chars(this_text, search_string, 
replacement_string)
   display dialog MyTrimTime
   
   set MyTrimTime to MyFadeDate as text
   set this_text to MyTrimTime
   set search_string to (ASCII character 32)
   set replacement_string to (ASCII character 0)
   set MyTrimTime to my replace_chars(this_text, search_string, 
replacement_string)
   display dialog MyTrimTime
   
end ShaveMyFileName


Thanks in advance everyone. 

BTW, I am running this in AppleScript Studio 2.4.1, but it makes the 
same mess if I do it in script editor.

Joshua