If they are the Ohlins forks, i have just replaced the oil and seals on mine.
I have done a few forks before and these were by far the easiest i have ever done.
It took longer to remove them from the bike than it did to change the oil and seals.
thnx charley, I will keep it in mind, but due to lack of equipment and place I won't be able to take them out. what is cost for this kind of job? i've got standard showa forks