if you no this question your a geek!
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go to start and then control panel. then go to add or delete programs and it'll load a list of programs on your computer. from there you can click on the expansion pack you want to uninstall and it'll take you threw the steps
control panel
In order to know the number of software programs installed in your computer, navigate to the control panel. On the control panel, click on Programs and Features. The next dialogue box will list the installed software programs.
System software
The special instructions that control the activities of a computer are called programs. A program is a series of instructions written in a way the computer understands.
If you are a computer Administrator you can modify the programs. Unlike any other account you can preform downloads ,add or remove programs ,and etc. Basicly you are in control
By going to Add or Remove Programs in control panel.
The operating system.
False.
System Software
you need to have the control panel to uninstall programs make user accounts modify hardware and many more programs I hope this answer you question
That would be called a "Operating System"