typosquatting how to control and what to do
You can use the tools that microsoft developed
This will give you a list
Than you will have to take a safe computer (preferably one that you only use for such tasks if you are working with confidential data) and visit the sites. Take a screenshot (for example with screenhunter http://www.google.com/url?sa=U&start=1&q=http://w...)
If the site has only advertising or porn or has no legal reason of being there (or in the worst case is a copy of your own site) than you have to do a whois
My preferred one is the one from www.geektools.be or for the belgians www.dns.be With this data you can also add a spyware check (for example with search and destroy http://www.google.com/url?sa=U&start=2&q=http://w...)
And with all these facts you ask the owner of the domain space (.be for belgium etc...) to transfer or block the domains.