Deleteing One Entry From Cache

DELETING ONE ENTRY FROM CACHE

I have a program that parses a url and extraxt the inner text, but when i try to reaload the web page with some changes i still get the old page, i know it has to do with the cache and i know that there is source code to delete the entire cache , but could it only delete the page im reloading?
thanks for any info

Or is there a way to force a reload from Vb, im not using the webbrowser control but the MSHTML control
thanks