Trying to install drum plug in, help!

I cannot extract the Sequencer 2 to the Audacity folder, my winrar extractor shows DENIED in the operation prompt.

Not an Audacity problem. Make sure you have permission to write to the Audacity folder you are trying to extract to. If that folder is in Program Files you will need administrator permissions. You can try right-click over the Winrar executable (EXE) then choose “Run as administrator”.