BTW, rooting does not only allow to (un)install any sort of app, but it allows as well to start porting any kind of ROM, which is very interesting as well, particularly because the Pocketbook IQ has exactly the same button disposition as... TA-DA! the Samsung Galaxy S I9000; it has three front buttons (Menu, Home, Back) and two volume buttons. That might allow to port ROMs which use ultra-efficient kernels and of course Froyo. However, hardware-wise it would be unwise to try and port things which are made for a beefier machine.
By the way, if you can't or don't want to sideload Ryanza's Z4ROOT app, there are programs which allow you to do it from your PC, with Windows and Mac. The only requisite is that the device has Debug Mode toggled on. Here:
For Apps with a rooted machine, I totally recommend Titanium Backup. It will allow you to uninstall system apps, but you can back them up in case you need them. Another interesting app is called "screenshot" which allows you to... well, do screenshots.