Dissolving to Create a List of String Values

I'm trying to figure out how to perform the following task. I have a numeric ID field I want to dissolve from but instead of performing statistics, I want to combine various text strings into one record for each ID value. For Example:
ID String
1 A10
1 A20
1 A20
2 A30
2 A40
2 A50
3 A60
3 A60
3 A60

The result:
ID String
1 A10;A20
2 A30;A40;A50
3 A60

Any help on this topic is greatly appreciated. Thanks.