wont it get listed on its own when it is parked?.....or do you have to manually submit the sitemaps to the search engines?
you would have to park your names and see if they get listed
or you can try and manually submit the sitemaps to SE's, if your parked pages have one.
these things happen through trial and error and that builds experience.
some domains do make the SE's, depending on the keywords, content and individual ppcs' ability to place your pages in SE's.
some domains that expire may already have listings in SE's and some maintain that link after it's parked.
however, most times an expired name will lose it's ranking in an SE's over time, again depending on what's done with it after acquisition.
imo...