Dogboy-- Mr. Josh made a good post about changing up a cable modem...
It's in the members section:
Heres another post i found as well:
1) Open internet browser
2) type "192.168.1.1" without " " in navigation bar
3) leave user BLANK and type "admin" without " " as password
4) Look for MAC ADDRESS settings tab, if you cannot find it, try looking under advanced settings
5) Once located, enable MAC ADDRESS cloning if needed, then change the LAST TWO boxes using letters A-F then numbers 0-9. For example "A2" or "C3"
6) Click SAVE
7) Go to your MODEM and click/hold the RESET button on the back of it for a second or so.
8) Wait a minute or so and you should have fully functioning internet with a new public ip address.
IMPORTANT: If for some reason (this has never happened to me) your internet does not-reactivate, DO NOT PANIC. Just unplug your modem and router for a couple seconds, then replug them back in to reset them to factory defaults.
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