in gnome is possible typing man:command in the url bar.

in KDE I think Konqueror can do it through KIO slave, but I don't know. With a script or something may be possible:

For the videos, maybe the problem is shockwave plugin. There is no plugin for linux.
An open alternative: http://www.gnu.org/software/gnash/
but don't work in some cases.

About the wine problem...

To create a new user you need to use useradd (see the help file to do it properly).
To create a folder use mkdir with root and use chown to change the propietary user of the folder.
Use chmod 666...