i need sitemap generator script

hi,
i need programmer who can code sitemape generator like
here xml-sitemaps.com
but with utf-8 & unicode and also can work for most of sites English
with unlimited urls
visitor can register or not
very fast and easy
can work on all browsers
can work for big sites
can generate .txt & .xml & .gz & .html and all possible formats
and other features


i will pay by western

drop here reply if u can and also pm me ,,
with pice - code language - time to finish it

i can buy xml-sitemap.com licence but i need own with
modifications i need

waiting ,,

How much can you pay?

So this is to make a competing service? Just to understand 100%