If you are sticking with ASP.NET 1.1, you could consider the Professional level book:
http://www.wrox.com/WileyCDA/WroxTit...764558900.html
Or if you can move to ASP.NET 2.0 then the Beginning book to start with is:
Beginning ASP.NET 2.0 with C#:
http://www.wrox.com/WileyCDA/WroxTit...470042583.html
If you are just getting started, it would make more sense to learn 2.0 unless your company is standardized on 1.1 and you can't move.
Jim Minatel
Senior Acquisitions Editor
Wiley Technology Publishing
WROX Press
Blog:
http://wroxblog.typepad.com/
Jim's Book of the week:
No book this week - Donate to the Red Cross!