I don’t have widget “folder view” in plasma, I have Open SuSe 11.0 with KDE 4.0.4 release 15.1. Please help me 
Hi. AFAIK there’s no folderview for KDE 4.0.x. It was introduced with KDE 4.1. I recommend an upgrade to KDE 4.2.4. It’s much more usable than KDE 4.0 which was more a developer version than an end user version. The main KDE 4.2 repo for openSUSE 11.0 is Index of /repositories/KDE:/42/openSUSE_11.0
If you wish, you can add the community repository as well. It contains nice extra stuff like plasmoids and window decorations. Index of /repositories/KDE:/KDE4:/Community/openSUSE_11.0_KDE_42
When you run into problems after upgrading delete the .kde4 folder in your home directory. It contains your settings and things have changed a little since 4.0. KDE will recreate that folder on your next login. Maybe you also want to look at http://en.opensuse.org/KDE4 Good luck!
Yeh use KDE 4.2, its much better in my opinion.
Its easy enough to get.
Thank you for help