patrior :
Its all in the title really, I cant tell you what Cat the cable is or anything since I dont know. All I know is that its probably a couple years old and that its yellow.
Thanks!
It could be at any point in your network, but is not likely to be the cable. Fast Ethernet (100Mbps) is likely what one or more of your parts is capable of instead of the gigabit that you need to accommodate a 200Mbps connection. It could be your modem, router (or if they are combined together, i.e. gateway), or it could be your Ethernet adapter on your computer or device.
As far as the cable, as long as it is CAT5 or better, which is very likely as it has been around a long time, you can run gigabit over it unless it is mis-wired.
What models are your router (or gateway) and computer?