using GC needs particular skills?

[Alexandr Druzhinin]

I make simple learning project and encounter the problem that when my 
application exits I get access violations (yes, I use windows and 
moreover - XP version :) ). I don't know the reason of errors, I'm sure 
that exceptions are thrown by runtime, not my code directly - its occurs 
right behind/after my code execution. Where can I learn about using of 
GC ( I think my code don't support gc or how to say it )? Or may be it 
is a common case, I'm not alone and there is some simple and clear solution?

Thanks in advance