Hi Dan,
ICQ has made their API available in a developers edition dll. I havent used it but recently read a good review of it somewhere out on the net (sorry, dont remember where I seen that article, maybe try CNET)
Here's where you download the developer's deal:
http://www.icq.com/api/HTH
Roxanne M. Seibert
Independent Consultant, VFP MCP
Code Monkey Like Fritos