I haven't researched it myself, but I was told by someone starting the program that Med Tech will soon be accredited.
Just out of curiosity, what are your grades for the other 3 prereqs for Ivy Tech? A B will not automatically exclude you because it is a points based system. If you have A's in Anatomy 1 and 2, and English, and score very well on the TEAS, you would still have a really good shot at the RN program. Say you have 3 A's, 1 B, and score 95 on the TEAS, your overall score would be better than someone that got 4 A's and an 84. The application deadline for Fall has already passed, but you can still apply for Spring 10.
If all else fails, you can apply to both the RN and LPN programs, and if you get into the LPN you can apply to the transition to RN program after taking your LPN boards. Wow, that was a mouthfull!