What's the longest you went before a conference invite?

[rocks24]

Im in my 4th season with Troy in the sunbelt and I have gone undefeated all 4 previous years and this one so far. I always schedule the top 3 ranked teams the first 3 weeks and the team I think will be the best at the end of the season for week 15 to boost my rank before the bowl season. Ive won 2 NC and one Orange bowl on heisman dif. no AI boost or anything cheap.(just wondering what everyone else plays on.) In 08 I was similar, (lost 3 games including one NC in 5 OT because my kicker was awful that year, 70 power) and got an invite to the C-usa after 2 years but nothing more in 4 more seasons so I gave up. In 11 im now a 5* school, started as 2* or 1* I think, and had my first recruiting year of having nine 4 and One 5* prospect interested(didnt get him tho). C+ ovr. C- def. C+ off. C spec. Teams. No sec invite yet and I've beaten Bama' all 4 years. Vandy's dropped to a 1*, is this my chance? Or will it never happen in 11?