A.A.
Hi J.,
I have only nursed a single (no twins), but there are several moms on mothering.com who are nursing twins, and they are finding ways to do it well. There are discussions about nursing tandem, positioning, nursing while sleeping w/ twins, etc. Go to that website and then click Discussions in the top navigation bar. There are thousands of nursing moms on that site (including me!).
Best of luck!