[Xx_jet_xX]

Who is letting them in? if it is you don't answer the door, if its someone else have them tell your friends you are sleeping or are not at home or the truth "he is busy at the moment, can you come back later?".

But you can also just tell them you are not interested in having company over because you just want time for yourself to follow your own interests. if they persist try to explain to them that if they wanted time alone for that you would respect them and give them that. honesty and guilt treatment sometimes works because they may realize they are being an a$$.

Now as far as the comp issue goes, you can always pull the plug out of the wall when it gets hijacked, but if they mess with it while you are doing something such as playing a map or posting a message then you really do need to get angry and say something. let them know you do not like it, and it pisses you off. if they truly are your friends then they will give that bit of respect to you.

OK thats my advice for the day..........