I'm trying to send an email from am asp.net application usinf cdo. I've installed exchange 2007 sp1 on windows server 2008 and read somewhere (since it is 32 bit) that exchange registers cdoex.dll instead od cdosys.dll. So that was the case and untegistered this to register cdosys. There were some errors during the process but it still seems to have change the registry entries. This changed the error now from can't creat object to library not registered. No about of re-registtring changes this error . help.