Why don't you give http://www.logmein.com a try and see if that works for you.
Get the free version. If you are going to be in the garage most of the time anyway and only need to be able to check stuff, just use the remote access for a month or so to see if it works for you. After you learn how to work logmein, you can even add inventory and images from a remote location.
I use logmein.com when I am at work. I do not have a network ethernet hookup at the front register. So I will use my laptop with wireless, access my office computer with logmein and I can work all day while running the front end if I need to.
Go check it out and let me know what you think.
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