healights/ side lights upgrade

[jamesh7168]

hi sorry if this has been asked before but i have no expericance with cars, but i have an astra gtc 1.7cdti (13 reg) and i want to upgrade my headlights and side lights ... if its possible, i have the horrible yellow looking lights at the minute which i think make the car simply look out dated, i have seen pictures were people have changed theres to what i think r led's or hid kits (dont really no the difference) and was wondering if someone could point me in the right direction to get them and how to install them as if there not just a simple swap like any old bulb i will not have a clue how to do it.

also if anyone has any pictures of theres that they have done along with what bulbs they bought that would be great.

thanks in advance

james