Hi
You should have a
Sybase Adaptive Server ODBC Driver - normally this is the one you would use.
Please take a look here when you can:
Sybase.com
They explain - specifically for "Microsoft Excel 2007 with Sybase Adaptive Server Enterprise 15.0.2" - however the same ideas should apply for you.. Hopefully..
Also, you should also be able to use the generic Microsoft ODBC driver but better to use the sybase one.
Hope that helps. Please post back up when you get a chance to let us know how it goes. Thanks
Al