all folders not showing on pc after virus scan


Hello I am new to this forum and i am facing a problem with internal sd card.
I did a virus scan before a week and found 100(approx.) of virus so i repaired those viruses via AVG . From then onwards whenever I connect my galaxy s to pc via mass storage it displays only a few folders of 80 mb. However on checking out the properties it displays 11 gb is in use...but these all folders are visible in plz suggest me any idea as to how i can see those folders back on pc...
thnx in advance