Can you give us samples of the type of data you have?
Basically, you could use PATINDEX or CHARINDEX to find each comma and separate it that way. For example:
1. put the value into a variable
2. get the first part by grabbing the string upto the comma.
3. put the rest back into the variable (so that now the variable is missing the part taken out)
4. continue this until you have parsed the whole value.
-SQLBill