Ok,

I have upgraded it a little bit...
But it will still not work for !!Ahmad Mushtaq!! or -`BZU`- ...

But it will work for those who have only one type of special character.
eg: for !!DJ URL: http://--DJ.bzupages.com
& for *HASSAN* URL: http://-HASSAN-.bzupages.com

So users who have more than one type of special characters in their username should change to include only one type of special characters.

Thanks