Stephen,
Any other identification on the dialer?
Where is it located?
Did Kaspersky identify it?
Most dialers are spyware and/or adware but some can be outright virus driven. These connection your computer to sites that will download a virus.
As has been said, Spybot and Adware are good defenses.
Also, SpywareGuard and SpywareBlaster are excellent programs that run resident on your computer to prevent the insertion or execution of most spyware. They are freeware and updated often (all free).