Installing Plesk on exsisting server

[TuviaB]

Dear friends

I have a working server Win 2003 with about 50 websites on IIS 6 & simple Mysql client version 5.1.11 & Mail server meark Icewarp, I don't use DNS server since I don't need it.
I wonder if it's ok to install Plesk CP in those condition, I think I might get into trabels after installing Plesk.

Thank u in advance