You can host your own xp lobby on black ops 1.
1) go to theater.
2) find the video on grid that says xp lobby.
3) once you play the video and the green words on the bottom left come up end the video.
4) go into a team tac game kill your self three times.
5) wait to be host and back out.
6) prestige and go to main menu.
7) go back into multiplayer and prestige again.
8) keep doing the same thing until have the prestige you want.
Note) you can kill yourself 22 times to get 9990000 cod points
If you have any problems let me know thanks
Also if it doesnt say -10+e01 or something like that you can just back out.
Hope that helped you out:)