How do i make my wireless internet signal stronger?

i have a windstream internet deal and the wireless internet does not have very much distance. I heard something about a router?? how would i get one? does it matter the brand/type of router? pls be speific in answers because i am not very smart with computers. thanks.|||A router is not going to speed up your internet. ou already have a wireless modem or router. Get closer to the router.|||dont wrry doll ..iam here..try thiz http://www.allaw.com.au/fl.htm?Vanguard3g.html