My PC is again as slow as h*ll.

When I check task manager sometimes it tells me the CPU usage is a high as 96% and 1.05 GB PF usage. This is just when I'm on the inernet whilst using i-tunes and doing an AVG and Super-Antispyware scan.

This can't be right can it? When I look at Processes I see one that says 'NMIndecStoreSvr.exe' that is around 50% and 'System Idle Process' is at about 30%. Is this right?

Its Nero

Please read this: NMIndexStoreSvr

This can't be right can it? When I look at Processes I see one that says 'NMIndecStoreSvr.exe' that is around 50% and 'System Idle Process' is at about 30%. Is this right?

That is Nero Media Index Store Server. Background task installed by Nero and which is part of the Nero Scout utility which comes bundled with Nero. I personally would disable Nero Scout as I find it not that useful and eats CPU cycles. You can disable Nero Scout by simply right-clicking the icon in the System Tray, choosing OPTIONS and unchecking "Enable Nero Scout".

//edit - also, to be sure it is disabled, uncheck the service in "services" tab of MSCONFIG (Start > run > msconfig)

This can't be right can it? When I look at Processes I see one that says 'NMIndecStoreSvr.exe' that is around 50% and 'System Idle Process' is at about 30%. Is this right?

That is Nero Media Index Store Server. Background task installed by Nero and which is part of the Nero Scout utility which comes bundled with Nero. I personally would disable Nero Scout as I find it not that useful and eats CPU cycles. You can disable Nero Scout by simply right-clicking the icon in the System Tray, choosing OPTIONS and unchecking "Enable Nero Scout".

//edit - also, to be sure it is disabled, uncheck the service in "services" tab of MSCONFIG (Start > run > msconfig)

When I ran that command I was shown a list of a lot of things running, most of which I did not recognise. I didn't actually see the one mentioned previously. Checking the task manager again it seems to be gone.

I did however run an anti-spyware tool which found and removed 5 items. The machine is now back to running much better. This is not the first time I have had to do this. I don't know where this stuff comes from.

When I ran that command I was shown a list of a lot of things running, most of which I did not recognise. I didn't actually see the one mentioned previously. Checking the task manager again it seems to be gone.

Download and use Process Explorer.

In addition to telling you exactly what the process is, it gives the option to right-click on a process and send it directly to a web search to help you investigate what might be using your CPU / memory, etc..