They have actually been to a few more than that. Dooley only took them to their first win since beating Lousville in the Independence Bowl in 1977. But before that they played E. Carolina in the Independence Bowl in 1978, tied Maryland in the 1990 Independence Bowl, and lost to Clemson in the 2001 Humanitarian Bowl. While they were DII, they went to about 10 other bowls I believe.
EDIT: While DII, they went to 7 bowls - winning 5.
Huh? That's back there a ways.