make dll without stopping the IIS?

hi guys,

I have a dll in the server, and some asp pages are using those dll. now i want to upgrade the dll to another version. for this i am stopping the iis and shutdowning the com+ application and then making the dll.

without these it is giving me permission denied error. for each and every small change i have to make dll. so everytime i am stopping and shutdowning..... etc.

so pls give me some ideas how to do my job with less strain?

Thanks