I doubt if a new router would solve your speed issue.
Check it's not being caused by poor wireless reception by connecting the computer and router by ethernet cable.
If no improvement the problem is either with your phone wiring or the supply from your internet provider. If you are connecting the router to an extension move it to the master socket (one nearest where the line comes in from the street).
If no improvement talk to phone company and internet provider.
i tested my internet at speedtest.net and the results were (download-529 kb/s)(upload-321 kb/s)
i don't know what those numbers means but i know my internet is slow.
i was wondering if i buy a better router, would it help speed up my internet speed.
i i my using a Zoom 5590-00-03 DSL Modem / Wireless Router and if buying a new and better router i was going to buy the Netgear WNDR3300 modem/router.