OK, I know this is a really dumb question, but I'm buttered if I can figure
it out.

I'm writing some general-purpose C# classes, that I then use in an a series
of aspx pages. So far, so good. But, how to I get to stuff like the Session[]
collection from these classes? I've tried all sorts of weird stuff from the
framework, but nothing seems to work. Is it because there's some object that
instatiated for the code in an aspx page, that isn't instantiaed in a 'standalone'
C# program?