Posted 09 February 2006 - 05:25 AM
well , this Microsoft Windows Telephony API Client DLL
tapi32.dll is a module that provides a marshaling layer that uses lightweight remote procedure call (LRPC) technology to transfer function requests to Tapisrv.exe (This program is important for the stable and secure running of your computer and should not be terminated.) and, when needed, loads and invokes service-provider user interface DLLs
okay, you may be trying to install the vista from windows 98 or something
this is the info that i can give to you
and i am invistigating ur problem and i will answer you fully soon .