i have pure gaming huge pc, with twin gfx cards and sometimes still get bit lag, but i think its the 1.8meg speed i have due to living in the outback "sticks", sometimes i feel lucky to even be online game, but i have a 275mb router which helps....anyway back to the person that started the post..like said above laptops not for great gaming, as wel all know
pc are great one day a few months later its a mid good machine a couple of years and you are looking for something new..unless you buy something very good to start with..knowing it can be updated much later, like i did !
to be honest, if you know very little about pc/laptops, never go by yourself to buy one, please take someone who does know something, a sales rep, gets a bonus on how many he sells ! you where easy money to him, i am guess he would have picked up on it,before you said a couple of words..this is not your fault, in my eyes you want a gaming pc, look for nice big cpu,loads of memory,and a dam good graphics card...the cheapest way to do this is to build it yourself/or get someone to do it for you, but saying that pc's are very cheap nowdays, unless you pay what i did, even after building myself £2500 gets a very top end machine..i am lucky beta game testing paid for it lol
make sure no spyware, newest drives, virus free all bums your machine down like said above already ^^^