Hi Blake 92, welcome to the forum!
Cutting the coc milk was DEFINITELY a great idea. Too much sugar (and white bread is pretty much sugar) is firstly addictive, secondly what it does is stimulate your pancreas to make insulin (because your blood sugar spikes). The insulin busies itself collecting all the excess energy (sugar) from your blood and thinks "hey, this might be useful one day, I'll just store it somewhere... hmmm, where to put it... " and it goes and puts it in your fat stores. And your body is pretty much designed to get more of that easy energy source (because in the distant primal past you never knew when your neaxt meal may be) so you start craving that food more and eat more... vicious cycle.
My advice would be to slowly (and I mean slowly) start changing your diet. Don't go tossing everything at once, it would be too much shock for most people. Just start replacing one or two things with a healthier version (like a good dense grain bread for the white, or including salad in the sandwiches) and then just keep with that until it's habit. Then change some more. And so on.
As for exercise... cardio exercise (that makes you puff and sweat) will help eat the fat you have away, then some resistance or strength exercise (e.g. weights, situps, pushups) will help tone and build muscle to get those washboard abs you want - but to have washboard abs, you DO need to get rid of the excess fat - otherwise noone can see them
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"