So, you're not quite ready to spring for a copy of Vista, or maybe your system can't handle it, or perhaps you're running Mac OS or (gasp) Linux. Why should you be left out of those three months of free T-Mobile WiFi just because you don't kowtow to The Man? Never fear, it turns out it isn't all that hard to get tricksy on those T-Mobile Hotspots, since they're only verifying your OS based on the user agent string your browser spits out. Luckily for you, a simple bit of googling will quickly reveal methods for swapping the user agent on most major browsers, and once you enter the string "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)" you should be all good to go. Then all you'll need to do is train your browser to http://hotspot.t-mobile.com/vista/ and start browsing those internets. Tell 'em Engadget sent ya', they'll understand.