Yeah... That is all true, but I think we are beating a dead horse here. I admit I haven't been doing this for a long time and I can't speak as to the functioning of the older clients. None of this is actually important to Geekys needs or the 5.04 beta client when run as a windoz service.
Just download the 5.04 beta client, install it and select the option to run as a windows service. This will set it up to run in the background as the lowest priority job on the system. There won't be any screens, windows, or icons associated with it. The CPU will always be running at 100% but user applications will have priority. The net effect is that the user won't even notice it and won't be slowed down by folding@home at all.
As to the "CPU Usage Percent" slider issue, I beleve it is meaningless in the context of a "Windows Service". I've installed Folding as a windows service on 2 machines and haven't noticed its presence at all, doesn't mean it isn't there, just means I didn't see it. It may well be in the setup. If so just leave it at 100% and folding will use all unused CPU time without the user being aware of it, unless you tell them.
I have seen the "CPU Usage Percent" slider in the "Advanced" tab on the graphical client and I'm think this is what is being refered to. I think Geeky is misunderstanding the functioning of this slider as well. This slider does NOT allocate some percentage of CPU resources to folding, it sets a max CPU usege above which folding will remain idle. I.E. Folding will run using all unused CPU cycles up to the setting, above that folding won't go, the user can, but folding won't. If you set "CPU Percentage" to 10% then folding will hardley ever run because it will only run at all when the user is at less then 10% and even then will only fill in up to the 10% point. I don't think this is what everybody is thinking here.
Remember, the "CPU Usage Percent" is NOT how much is allocated to folding@home. It is a limit that folding@home will not push the CPU beyond. This is just a guess but I'm thinking the "CPU Usage Percent" limit is there for thermal limiting purposes. If your CPU keeps getting hot and shutting down, then lower it a bit. This is especally useful for AMD CPUs which don't self thermal limit.
Get the 5.04 beta client here and install it as a service and solve your problems. Invisible to the user and the user can't close it.
http://folding.stanford.edu/download.html
Bill