dsldevice.lan

Hey,am a newbie and the problem am experiencing with my 3yr old Windows vista computer lately is so annoying.I kind of get this info :-

dsldevice.lan followed by awful lots of jargon.

uncountable times a day and before i log in my network details,i get this info like i should enable the scriptings and after i feed the logging details i kind of get:-

dsldevice.lan followed by connect,success and DNSSpoofed.

I have tried emptying the recycle bin,clearing the cookies,increasing the security but nothing
is working yet,the problem is somewhat malignat..

Please advice..

Thanks.