[plt-scheme] (Newbie) Issues with SICP and Dr. Scheme

>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>
>Hi,
>
>Sorry to intrude with stupid newbie questions, but I'm having a really difficult time convincing Dr. Scheme to run the driver programs from chapter 4 of SICP.  If anyone could offer any simple advice on how to make them run, and particularly the query one, I would be greatly appreciative.
>
>Thanks for your time,
>Avea
>

Hope the attached files will help you. Just run them with the "pretty big language". 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 444.scm
Type: application/octet-stream
Size: 21179 bytes
Desc: not available
URL: <http://lists.racket-lang.org/users/archive/attachments/20040427/222aa287/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 433.scm
Type: application/octet-stream
Size: 16096 bytes
Desc: not available
URL: <http://lists.racket-lang.org/users/archive/attachments/20040427/222aa287/attachment-0001.obj>