I saw that Paper Princess (I think) mentioned the adapter for GO dies, there is also one you can get for Sizzix dies from AccuQuilt's sister company AccuCut.
I hope you get a lot of use out of your machine, I use mine all the time, for so many different things.
I also watch AccuCut and AccuCutCraft for sales. I was able to get my alphabet set for 50% off years ago, and I've never regretted it once!