Welcome to bikeforums, Godzilla! For you, thankfully, there's an option. Find yourself a 2007 (not 2008) Specialized Hardrock SPORT. The "Sport" model comes with tough-as-nails 36 spoke wheels, and plenty of other big-dude friendly components. The 2008, for some reason, now has 32 spoke wheels, which aren't as big guy friendly as the previous years. Only one thing I'd change - get some big Wellgo BMX pedals - big ole platforms that are going to be friendly for your likely wide feet.
I started riding my Hardrock Sport when I was north of 400lbs, probably about 410 or so - and it held me. Hell, it held me at 370-ish doing some pretty crazy MTBing last year. I paid ~$350 for mine, and I still have it, held up for nearly 2,000 miles before I needed to do anything to it. I'll keep it forever, great great bike.
Other than that, just ride!