HOW TO: Use Google Maps with ASP.NET
Solution
Working with Google Maps API in ASP.NET
by Mike Borozdin - working directly with the Google Maps Javascript API.
Google Maps Control for ASP.Net - Part 1
by Shabdar (Shabdar.org) - using free open source web server control.
Google Maps Control for ASP.Net - Part 2
by Shabdar (Shabdar.org)
GoogleMap Control Documentation
by Velio Ivanov (CodePlex) - using free custom control (under Microsoft Permissive License).
Subgurim.NET Google Maps Control How To...
by Subgurim.NET - free control available for non-commercial applications; commercial licenses are also available.
Related Resources
Google Code: Google Maps API