Can't get IIS To Install On XP Pro

Howdy -

I'm trying to install IIS on my PC. The installation process asks for the
WinXP disc to get the file zClientm.ex_. I point the installation to the
proper place and the install says, "I can't find it" even though it's there.

I've searched Google groups and this seems to be a prevalent issue, but I
can't find anyone with a solution.

Any ideas ?

Mike