[Disclamer: ..1) now i wont take responability for any mess that you make! .. i dun care if i was the one who inspired you! .. so if anything goes wrong .. dun go runin to your mommy shouting that shahrukh made me do this and now my guitar is all messed up ... 2) .. if you really wanna go through and change your own pickup .. go through this post in detail ... and be sure that you can tackle all aspects .. 3) the pics are a bit shakky .. sorry for that .. but if you had been fasting for 15 days you wouldn't have done any better .... :P]
1) .. pic no.1 ... get a towel .. lay it flat on ground and put your guitar on that ..( this is to protect the finish from any rugged carpets) .. smell out a dirty sock and tie it around the neck (i you want to keep your existing strings... you'll know why .. later)
2) .. pic no.2 ... get a flat head screwdriver and take out the post screws holding the bridge .. be carefull here .. they have tendency to jam up .. when you dun want them to .. so take em out .. in turn .. do couple of turns of screw 1 then couple of turns of screw 2 ... and so on ..
3) .. pic no.3 now take out the bridge .. and the saddle and put the strings as far as possible from the guitar body .. (now you know why i used a sock .. smellier the better)