Parsing whois lookup information

Hello, For a project I need to parse whois domain lookup data. Have some one parsed these data in PHP? Please let me know where can I find them. I have already gone through google and couldn't find anything useful. There is one .NET library (http://www.hexillion.com/whois/) available, but it is charged. :((. So if someone can help me out it would be grateful. Thank you very much, Harish Rao K. Nous Infosystems This e-mail transmission may contain confidential or legally privileged information that is intended only for the individual(s) or entity(ies) named in the e-mail address. If you are not the intended recipient, please reply to the postmaster@nous.soft.net, so that arrangements can be made for proper delivery, and then please delete all copies and attachments.Any disclosure, copying, distribution, or reliance upon the contents of this e-mail, by any other than the intended recipients, is strictly prohibited.