I have make change username script for you. Have make zipfile with mail change and username change...

Thanks Zip2000

[url]http://www.doomday.in/jcow/changemod.zip[/url]

This is for 3.x NOT to 4.x

change username works but through this profile page is not opening then
there must b som mistake

I have no problems..

for the member name changes, you can't just change the name in jcow_accounts.. you'll also need to change the uri in jcow_pages.. maybe other places as well, depending on what extensions you've got installed.