Are these coffee beans unroasted? I bought these coffee beans in Bali. I tried to grind them up to make a cup of coffee this morning, but they didn't grind properly, leaving lots of big chunks. It was more like grinding peanuts than coffee. The coffee didn't taste or smell anything like coffee either, and it was a really weak brown colour.

I'm assuming that I've gone and bought unroasted beans (although it didn't say anything about that on the pack). Is this the case?
Yes, they are not roasted. I think you can do this in a normal oven, but I have never done it myself so I cannot advice you on temperatures etc.