You can specify your download directory by going to

tools menu > options... > saving

After applying changes, go to

tools menu > options... > sharing

and remove your download directory from sharing if you wish. limewire automatically shares your download directory even if you didn't ask it to.

furthermore, if your download directory is something like:

c:\p2p\LimeWire\Complete

LimeWire will automatically create a directory called:

c:\p2p\LimeWire\Incomplete

where partial downloads are saved.

Or did you simply want to uninstall LimeWire? If you are using Windows, you can uninstall Windows applications from the control panel and going to "Add/Remove Programs" (sometimes called "Add/Remove Applications" depending on the Windows ver.).