Here's a pretty good article on MSDN describing how to access an embedded resource (i.e., image, .JS file) in ASP.NET 2.0:  http://msdn.microsoft.com/library/?url=/library/en-us/dnvs05/html/webresource.asp

 

It wouldn't take too much effort to create a similar, simpler implementation for 1.0 & 1.1.