Does anybody know how i would do this.Thanx.

By far the easiest thing to do is to get down to Halfords and ask the guys there. They generally have replacement parts of a suitable type which are cheaper than those bought at the dealership (They may not be Peugeot originals but that should be ok. It will be a lot easier if the car attachment is not damaged and all you have to do is screw on a new part. If it turns out to be badly damaged and the car section is damaged too, try looking at a Haynes manual (Halfords have them too). For cheap original parts try a breakers yard, may not be one near you though. Steer clear of breakers yards for important parts like tyres and wheels as you never know what has happened to them, but for a new aerial this should be ok.If it is the same as my Peugeot aerial.... where is it broken, above or below the swivel point? Below, yikes! If above try perhaps with a pair of pliers, if rusted, unscrewing the remainder of your aerial, then you can just buy a new one.