I&#039;m currently studying the use controls and whatnot, and am slightly disappointed to see that I cannot overwrite DLL files which are in my bin directory once I&#039;ve loaded an aspx page that uses it.<BR><BR>I thought this was one of the great things about asp.net... instead I either have to stop and restart IIS or just create a DLL with a different name from the old one, and change references etc..<BR><BR>Or am I doing something wrong? (hopefully i am...)<BR><BR>the exact error message on my Win2000 Server is:<BR>&#039;The process cannot access the file because it is being used by another process.&#039;<BR><BR><BR>Thanks for any help<BR>Daniel