You will not need to mount the share.
Konqueror takes care of all that in the background, but one problem I found on my system is that Openoffice's open/save menu only shows the file tree. I don't see access to the smb:// protocol, so some sort of automount may be preferable.
I have successfully used simple shell scripts to do this. Here is one way:
Create a file somewhere, let's say /home/user/.credentials
with this content:
Now make a script, for example /home/user/mountsmb.sh
smbmount -o credentials=/home/user/.credentials //IP_or_name/share /home/user/some_dir
make the script executable:chmod +x /home/user/mountsmb.sh
You should now be able to mount your shares by executing the script. If you want it to be done automatically, just move the script to /home/user/.kde/Autostart/