I have to comment because I did exactly the same thing. Some bag seed that I had that I was told was "Crunch Berry" and "Dog Sweat" had 1 seed. I thought, what the hell, stuck it in some good soil in a pot under my computer desk where it got about 12 hours of sun every day, and watched the stretchy, extremely skinny plant rise to about 12" in a couple of months. I had no experience and had no idea these message boards existed.

She must have been female because she bloomed all the way up the stalk, probably 5 or 6 flowers. I was hungry for herb, so I cut her off, hung her up for a few weeks, cured the buds in a glass jar, and ended up with about 1-2 grams of smokable bud. Whoo-hoo. It smoked great, oddly enough, and produced a decent high.

Moral to the story: I wish I had saved that damn seed for a good grow, that was some killer bud!

Good luck!