I recently switched ISP's (wavelinks to PMI) I had no issues connecting to web pages with wavelinks with my MBP connected to my WRT54G V5 linksys router. Now certain servers are not found. (ex. The BBc webpage does not open, digg does.) I just recently switched to OSX so at the moment I do not know anything more then the basic functions of the OS. Any suggestions?

thanks for your time