I am trying to install a rpm on my machine (Real VNC)(11.1).And when i try to install it says that i don’t have a dependency which this program requires and it is called libstdc+±lib6.2-2.so.3 and i cant find it in YAST. So what can i do?
try checking the rpm provides box when searching in Yast
No Results 
What they seem to be chasing is a very very old lib, I question where the rpm came from. I’m not so sure it is from here but if it is then I really do recommend looking for another app.
http://www.realvnc.com/products/free/4.1/download.html
I would look into another vnc client/server there is many recommendations in the forum.
Anyway the lib is available in the “compat” package. The solution was in caf4926 first answer.