Creating public folder

I have created a public folder for our administrative staff. I gave the same persmission to 10 workstations, two of the workstations can not open the folder. One station uses windows 98 and the other station was upgraded from 98 to 2000. All of the other stations run windows 2000. I have not been successful at locating any patches and the MS web site gives no clues. I am open to any suggestion.