For Windows users, Dontronics web site mentions that the DT-006 is compatible with Bascom-AVR...
You can download the demo from www.mcselec.com and it works fuly, only with a compiled code limit of 4kb. I don't know if the programmer side has this limit but the CapsLocker HEX file is below it. Just select your programmer type in the options (I use STK200/300 compatible), click on Manual Program, load the HEX into the programmer buffer, write it, and set 2 fuse bits options, done.
More information about formatting options