Here is an free, self standing, application to transalte Bitmaps into Lisp funtions for using in DCLs. I think it works up to 2010 version, but i'm not quite sure. I'm very sorry, but it is in Spanish. If you need any help, post it and i'll do translations my best.
The app runs Autocad itself, but i think it is better to run it before running the app.
I post an example about its use. One DCL and a function with the function generated by the app and its main. I've translated author quotes into english...(please, mercy...)
Regards.