I've never done zumba, but about this time last year I was plucking up the courage to start gym classes, it took a while, I hated the first one and probably the second one too.......!
But, something changed, and I went 5 or 6 days a week for 6 months before I moved and couldn't go anymore. Now my gym classes are one of the things I miss the most about the UK! I NEVER EVER thought I'd be saying that seriously!
So, no matter how the first one is, keep at it for a while and then make up your mind
And give 30DS a go too, I'm working on it at the moment and it's certainly turning into my latest exercise addiction, I love it!
Which BL dvd do you have? I've got a few on my computer that I haven't looked at in ages, I might just have to dig them back out again
Good luck with the zumba!