Aah, my laptop was smoking and now it won't switch on?

You have fried it my friend, you were lucky it did not catch fire. There are several clues as to the cause in your question - you wrote " think the power jack was ruined cos when i would attempt to charge the laptop, i'd have to place it ina certain position and not move the laptop which was such a pain." this suggests the connection on the mainboard is broken. There has been a short circuit and this has caused the smoke when the connection burnt out, you may find the charging adapter is damaged as well. I would not waste your money on a repair you are going to need a new mainboard and this is the most expensive component in your laptop. You are better off buying a new laptop, save the hard drive from your old one and buy a 2.5" USB enclosure and use it as a back drive for your new laptop.