Animandel - Yes it is true; cats do not usually enjoy baths. The good news is that there are sprays and powders made for treating cat lice, and ear mites. However, the bad news is that even when the sprays and powders are used, it is recommended that you shampoo your cat first. That's the best way to be sure of getting all the lice.
There are also dips for cats with lice, but I guess that would be almost as difficult as shampooing.