virtualhosts on 1.3

I have set these things up on 2.0 without any problems, but I can't for the life of my get them to work on 1.3, I have checked my syntax and directives countless times. I have gone one by one and nothing seems to be working, they all just point to my main index. Any thoughts? Anything special I should know about 1.3 vs 2.0 that i should know? or am possibly looking over? any help would be greatly appreciated