I own a very slow Advent 7000 and i need a upgrade on the RAM but I don't know what has compatibility its really bugging me!!!

what sort of ram does the advent 7000 take?

DDR SDRAM according to a quick search

found this;
There is very little official information available on Advent memory upgrades, specifically this laptop.

You can use CPU-Z to ID your motherboard as well as see what you have in there already:

http://www.cpuid.com/cpuz.php