[plt-scheme] (R6RS) Dr Scheme doesn't indent the 'library form correctly

Hi

If I'm doing an R6RS module, how can I import something from a normal  
MzScheme module? For instance, If I want to (import (rnrs)) and then I  
want to have access to regexp-match from (require scheme) (or (import  
(only ... regexp-match)))?
also, how can I, in MzScheme code, require an R6RS library? I can't  
just (require <lib>) because it's not in the collects' directory

Thanks for the help

   - Filipe Cabecinhas