Myself and 2 other developers have been struggling to get a rewrite rule working.
The clients old site used ASP.Net and we need to convert old urls to our new system.
Basically the rule needs to convert:
/web/Page1.aspx?PageID=100 to: /page/_100
the only important variable is the PageID however there will be variations on the aspx page called, but only Page1.aspx, Page2.aspx and Page3.aspx.
If anyone can help with the re-write rule it would be hugely appreciated.