how do i ditch the current xbox account and connect to new one?

[Matthew]

It auto assigned me to a name I don't want.

 

[weedking]

I assume you're referring to your gamertag - you can do it here:

Change Xbox Live Gamertag | Change Games for Windows LIVE Gamertag | Xbox Live Change Gamertag - Xbox.com

 

[TeknoBlast]

When you get that first generic gamertag, you're allowed to change it. Then after that, I think you're allowed to change your tag once a year. I forgot what the time frame is.