Sorry for delay in getting back to you. Don't worry about WinPatrol not installing at this time. From your list (most which you know, I'm sure) in Task Manager:
Zcast: This seems to be NetZero's Accelerator application running.
Pcbooster: PC Optimizer is an application that automatically tunes your PC for faster speed & stability.
Systray: A must keep.
Mctskshd: McAfee's app that controls critical updates and antivirus related problems..
Mcvsescn: McAfee's Email scanning mosule.
Mcagent: McAfee's database updater.
Chkras: This one seems to be the baddie. It is a registered security risk.
Pogo may take a lot of memory and the more tasks you have running the less availble. Systray and all the McAfee stuff for now must continue to run. I would REMOVE Chkras
. This is spyware and monitors your browsing habits and sends it back to it's own servers for analysis. This may be why you have some popups.
I think it might be better for you to vist the Malware section
of this forum and follow their instructions carefully after reading the PINNED topics and performing the self-help listed there. I just want to make sure that your PC is clean before continuing as Win ME and some applications do not manage memory very well. After this, you can check the number of running processed listed in the Start up section of msconfig and post it.