Chris1.4RT, the rear brakes do hardly anything, fact. When you fitted your shoes, im betting you messed up with the adjuster and the pistons had to travel further than they should have had to (due to the spring forcing the pistons back in), this basically means that the more effort it takes to engage the rear brakes, the less effort available for the front brakes (you should be able to get away with pumping the brake in situations like this), seen it before.
cliosport1.216v, no way of telling what drums you have... could be bendix, girling, or bosch. Best way to tell is to open the drum and have a look - should be stamped on the drum itself off the top of my head.
If all else fails, use a puller to remove the drum, you may lose the bearing in the process, but theyre cheap to replace and are the least of your worries, lol.