LogMeIn has been a very useful tool for me both personally and professionally. I started using it late 2007-early 2008, this tool gives me the ability to get into my machine or anyone I help or support via any broadband connection. Best of all, its FREE.
When I started with my current company there was no standard remote support tool to use. Being a startup company, any free tool we can use is preferable. I started off using something I used before, WebEx, something I had used for a project at my last job. So it was good for the trial period, and I searched for any free alternatives.
I came across something called LogMeIn and signed up for a free account. I tested the software on a couple of machines and it was the tool I needed. It did not fill all the needs, but it does get the job done. LogMeIn also has paid versions with additional functionality, which may turn it into the exact tool I need, but I have not tested that.
Here is a link to a comparison of most Remote Desktop Software available on Wikipedia.
If you need a low-cost remote support / remote control tool, why not give LogMeIn a shot? If you have used LogMeIn before, what do you think about it? Let me know if you have used their paid services, I'd like to hear what you think.