How to tone/lose a gut

[Morny]

Just noticed this board, not sure when it sprung up but it's pretty good.

Anyway, since the beginning of last March (2011) have managed to lose just over 10 stone - from a mammoth 27st4, to a (still not inconsiderable) 16st13. It's an achievement I'm quite proud of, and feel that as I'm 6ft2/3'ish, I don't want to lose a great deal more (maybes a stone, stone and a half) before hitting ideal 'weight'.

However, still got a bit of work to do on toning up, specifically getting rid of the gut I've still got - it's considerably smaller than before, but it's still pretty nasty!

What things specifically can I do to concentrate on this?

Currently doing running a few times a week (training for the 10k, and GNR) and also play football once/twice a week, as well as have one/two sessions on a bike/cross-trainer (depending how often I play football). But figure this cardio-based stuff won't be doing loads towards it, really.

Considered doing one of those internet '100 pushups' or '200 situp' challenges to build it up over a number of weeks, but suspect that although this would help it wouldn't make a massive 'dent'.

What type of thing should I be doing to to get rid then? Haway SMB, help me through this final stage....