I understand the frustration some of the users are feeling by wanting a nice gui to be able to unzip/unrar files directly from the file browser but doing it on the command line really isnt that difficult after you figure out where your files are stored.

For those having difficulty I'd suggest finding a linux terminal tutorial. If you are a serious n900 user then it would be extremely beneficial to learn about one of the powerful tools on the n900: the terminal

On a side note, I had no idea that unzip and unrar were available! Yay! No more connecting to my laptop to uncompress stuff! thx for the info all