Wireless DSL Internet Technology

I am interested in employing a wireless internet connection (512K)to our Virtual Private Network, and am interested in the advantages and disadvantages of using this technology. Traditional DSL services are not offered at a few of our six locationsin South Florida, and we would rather not pay the high prices for a dedicated T1 line. We do not conduct most of our business over the internet, although security is still a major concern. Please feel free to express your thoughts on this technology.

-Dan