Registrating OWASP DLL[COM Comp] for two different site withing same server/machine

Hi,

I have two ASP site[mix ASP & ASP.Net] hosted on single server(webserver). I am using OWASP Libary for Crossite Scripting. I copied the OWASP DLL in the BIN folder of first site and regsiter it using

Regasm Owasp.Esapi.dll /tlb: Owasp.Esapi.tlb /codebase

Know I want to use the same Owasp.Esapi.dll in another site hosted on same machine.

If I try to copy the same DLL in in the BIN folder of second site and register it using above command, then thnings are not working.

I also try to register in GAC, but it is not working.

Please suggest the best practice to resolve this issue.

Thanks

Siraj