Some doubts about my B1/B2 visa

[avocet]

I have a B1/B2 visa which lasts 10 years and will expires in March 2008, it is attached in an already expired passport (I got that passport in 1997 and it lasted 5 years and my visa was issued in 1998) so I got a new passport, and then I made my first travel to the US 2 years ago. This year I traveled to the US again for 2 weeks, and now my passport will expire on December 30 2007, so I will get a new passport, because I want to travel again, before my visa expires. I am a college student, so I want to visit again the states for holidays (here in my country is summer), but my question is: should I have problems with inmigrations if my visa is attached in my old visa, plus the current passport (the one which will expire soon) and the new one I will soon get? I mean I will carry 3 passports and a Visa which will be soon expire....
Please you comments :)

[JMRJ]

If you have a valid U.S. visa in an expired passport, do not remove the visa page from the expired passport. You may use it along with a new valid passport for travel and admission to the United States. And I'm glad you figure that out that you may gonna need to carry 3 passports. You just got caught right in between the expired, nearly expired and new passport... It happens sometimes.:) Oh, wait a sec... If you could get your new passport before your trip, you might just need two then; the expired passport with the visa on it and the new passport.