I sometimes have customers that have simple problems I can fix from my desk instead of driving to their business or house.
Right now I guide them through setting up NetMeeting and connection to my PC with it. Then they share their Desktop via NM and I take control and perform what ever maintance is needed. This works very well most of the time. It's just a hassle to explain to them how to find the conf.exe file, then config NM , run it, connect to me and then how to share their Desktop.
I wan them to just go to our company's website. Follow a link, Enter a username. Then Remote control would automatically be handed over to my PC.