35502 Joomla Sitemap Comp Change

Im looking for some that can make some changes to an aready existing component.. Joomap.. Joomap is a sitemap component.. I need the following changes to it.. I need to be able to select the number of links per page, so splitting the sitemap un into multiple pages ! So for example i could split a 5000 page site up into 100 different sitemaps with 50 links per sitemap page.. Each page would have navigation between each sitemap page.. i.e sitemap1, sitemap2, sitemap3 etc.. Must all work with SEF... Should be quite easy for someone who knows Joomla/mambo Payment by Scriptlance or Paypal... No Escrow...