This is what i use to help my frinds out when they havin a problem with they pc and i didnt see it on zone so i thought id let yall in on it. software is called teamviewer. it allows u to either control the persons pc that ur connected to via the id and passcode automatically generated by the software, or tranfser files. have presentation. its a great software. or if u just wha show ur frens something on ur pc. or just mess around with it. its totally and completely safe too. check it out urselves
http://www.teamviewer.com/download/index.aspx
select the options that indicate personal use and u get it free