I need a regex that matches a string containing a delimited list of digits.  While this seems fairly straightforward, the following requirements must be met:

1)  Any number of spaces that occur before or after a delimiter should be accepted (e.g.  '3   ,   9   ' is OK)
2)  The string can end with spaces or a delimiter (e.g. '3  , 9 ,  8  ,' and '3  , 9 ,  8   ' is OK)
3)  The string can not contain any other characters other than a digit or delimiter (e.g. 3  , 9 , a , 8' is not OK)
4)  The delimiter can be either a comma (,) or semi-colon (;)
5)  There should be a Group Or Match (not a combination of each though) created for each token found
6)  It must work in .Net 2.0

I have developed the following expression which works for every requirements I have except #4. 

Expression
----------
^([0-9])(?:\s*|\s*[,;]|\s*[,;]\s*([0-9])?)*$

Test Data
---------
3, 6, 2, 6

Results
--------
Match 1: 3, 6, 2, 6
Group 1: 3  
Group 2: 6 

Required Results (Group)
----------------
Match 1: 3, 6, 2, 6
Group 1: 1  
Group 2: 6
Group 3: 2
Group 4: 6  

Required Results (Match)
----------------
Match 1: 3
Match 2: 6
Match 3: 2
Match 4: 6

 Thank you in advance for your help!

 -jd98