DNS error

Do not know what happened yesterday, but the computer will now connect to the internet succesfully and log on (to Tiscali.co.uk) but will not load any pages.

Error message is “cannot locate server DNS error”.

I assume that the problem is within Network, TCP/IP settings. Nothing is shown under DNS configuration. What should the entries show?

Running Windows 98 second edition, IE 5.5, 56K modem.