VC++ code to extract Google PR, alexa rank and compete rank

Can anyone help with an idea to extract the Google PR, alexa and compete rank of a site using VC++ code. I hav list of sites to extract these information

to load web pages , use curl

http://curl.haxx.se/
http://curl.haxx.se/libcurl/
http://curlpp.org/

to handle web page contents, use regex