You can get plasterboard fixings which are like big thick screws. You just screw them into the wall and then screw a screw into the middle of them. (if you get what I mean!) I've used them all over my house and use them at work as well, they're really good and can take a reasonable amount of weight. Pictures, small shelves, mirrors, that sort of thing will be fine. Anything heavier, eg, tv wall bracket, heavy shelving, then looking for the wooden frame behind is a good idea. P.S. The spring clips are useless, I really wouldn't recomend them.