some difficulties....

So yeah, after struggling with SketchUp for a little while I realized how much easier it'd be if I could use an actual computer mouse instead of that finger sensitive part of the laptop. Unfortunately they don't allow you to download the software in the SINC sites so I got stuck trying to create my own building( it actually turned out to be something similar to a factory)... However, another problem came up while I was in the process... My computer has been extremely bad recently, it all started with almost complete change of sounds it makes, then it got really slow and it'd take it about 15 minutes simply to turn on, and I'm not even talking about the time it now takes for all the other applications to run...:( Friends say I should reinstall the system...So i was unable to save my little piece in SketchUP but hopefully it's not going to happen the next time...