Denise.
You could create a "Rule".
Tools-->Message Rules-->News...News Rules Tab. Create a rule that deletes
all messages older than xxx days, and apply it.
You will have to reapply that rule again whenever you want to delete newly
accumulated postings.
You can apply the rule to each individual news
group(microsoft.public.windowsxp.accessibility), or to entire group of news
groups(news.microsoft.com).
HTH
JerryR