xhtml basic and script

Could someone be kind enough to steer me in the
right direction re customizing/extending xhtml
basic 1.0 to include the scrip module from xhtml
1.1?

If I'm using the flat dtd, can I just copy the
script module from the 1.1 dtd?

I like Basic 1.0 because it eliminates
presentational elements but I still need
scripting so my document doesn't quite validate
in my xml editor.

Any tips would be greatly appreciated.

Scott L Holmes