Windows Batch Script to Search Network Drive Directorys

I need to run a script which will delete files/directorys within a subfolder structure only if certain directorys exist.  Then delete the files/directorys which are older that a)7 days.

Parent directory (p:\*fund*\) could be any directory name, for example:
p:\abc\letters\reject\
p:\def\letters\printed\
p:\ghi\letters\

So in above scenario, need to search the root directory (p:\*.*\letters\) for directorys called either reject or printed, then if exist delete the file contents of reject or printed if those files are > than 7 days old.

I've been investigating the CLI in XP and don't think the 'For' or 'If' combined with 'Forfiles' commands can do this.  Do I need to look at a more powerful scripting language?

Any help would be apprciated!!

Thanks in advance.