You probably would have to buy motorized rods for the draperies. I know that Hunter Douglas makes motorized shades but I am not aware of a system to retrofit existing shades. I have included a link to one manufacturer for motorized drapery rods.

Here is a link that might be useful: Automated Shades

BTW, Lutron provides lighting solutions. They work with other devices. For example, in our home theater, we are going to use a motorized rod system for our stage that connects to a contact closure device which then communicates to our Lutron system (that controls all the lighting in the room). That is a rather expensive way to do what you want so I would stick with a system where you talk directly to the rods.

Lutron makes roller shades, roman woven woods, roman fabric and drapes. Different versions can talk directly to Radio RA2 or Homeworks as well as to the new Grafik Eye.

We have the Grafik Eye system in our home theater and it's absolutely amazing!

You might be able to keep your existing drapes, but you'll definitely have to replace the curtain track with an electrical one to function with the remote control. Hunter Douglas and Lutron do offer good motorized shade products as mentioned. Somfy is another good one to look at for home automation. The best bet to find an inexpensive deal is shop through your local home integrators or window treatment installers, which might be willing to negotiate more. Where do you live? I've placed a link to the place I know in New York, but they don't list a lot of details about motorization on their site, you have to visit the showroom

Here is a link that might be useful: Motorized Shades