Ride what you got and have fun! Lots of folks have front and rear suspension, but it's not a requirement. I ride a fully rigid Kona Unit which is a more hardy bike than the Dew, but it's proof that you don't need to have suspension to have fun.
You might want to start on easier trails and work your way up (which is really good advice for everyone). Give Badger Prairie a try and then maybe try out dizzy at Quarry Ridge and Seminole next. Check out our trail guides to get some ideas where to find the green (easy) trails. Once you've got those, move up, and when you feel your bike is holding you back, that's the time to upgrade.