Not Trainer Needed!
There are many different ways but this is the easist ( i fail at my own language)
This has worked for a few of my friends, that have chose to do it.
- 1) Get on MW2
- 2) Find a Modder who will host an XP lobby
- 3) Rank up to 70, Prestige
- 4) Now go into Mw3, You'll have Prestige Tokens