I need help...

[edyzmedieval]

If you use DM2 (http://dm2.sourceforge.net/) you can minimize any window to the area next to the clock on your taskbar. If you then toggle that window to "always hidden" in the options of the taskbar, the window will be hidden unless you press the arrow button to reveal hidden processes.
I hope this makes sense.
DM2 also gives you 2-4 desktop areas between which you can switch around, like in linux. You could restrict your flight simulator window to desktop 2 and have wikipedia open on desktop 1. If someone approaches you you just switch to your work desktop.

R'as

R'as you're a life saver.
My only gripe with the program is that it eats unusually high resources, even if it shows that it's just very small. 4GB and I have to wait for IE to load.

How do I switch from desktop 1 to the other one? How do I do it? I got the full version with some plugins, including Virtual Desktop.

[Evil_Maniac From Mars]

I found a program that's really small and will hide everything with the touch of a button. I cannot quite remember the name, I'll look at it tomorrow.

[R'as al Ghul]

R'as you're a life saver.
My only gripe with the program is that it eats unusually high resources, even if it shows that it's just very small. 4GB and I have to wait for IE to load.

How do I switch from desktop 1 to the other one? How do I do it? I got the full version with some plugins, including Virtual Desktop.

You're welcome.
I've the virtual desktop disabled and it almost needs no resources at all. If you've a flightsim running on desktop 1 and IE on desktop 2 then it's normal that your system is slowed down. The flightsim is eating up resources. I'd try to disable the virtual desktop for the time being and see if that's the reason for the low performance.

Switching is done by double-click on the virtual desktop icon, iirc, and right click gives some more options.