I installed winex3-3.1-1.i386.rpm on my mandrake 9.2 system. It shows in file type lists, but doesn't open. I tried to reinstall the rpm, but rpm -e returns the message : package winex3-3.1-1.i386.rpm not installed.
I tried to install with rpm -i, but it says it's already installed.
Is this common? Is there another way to uninstall rpms? I tried using Remove Packages from the Cofigure your computer menu, but it doesn't list it.
Any help appreciated.

Drop the .rpm in the -e command and try again

rpm -e winex3-3.1-1.i386
or possibly
rpm -e winex3-3.1-1

# Guides to software management
LNAG - How do I install a program I downloaded from the Internet?
Rute Guide's software explanation

# Mandrake links
Mandrake home page
Mandrake Users website
Easy urpmi config for Mandrake
urpmi mini-HOWTO
Easy software management: Red Carpet
Maximum RPM
rpmfind
You didn't install the developmental packages? As root, command:
urpmi gcc
An Introduction to the Midnight Commander. You can install it by commanding:
urpmi mc
Midnight Commander home page

In the future, you might want to take advantage of Mandrake's RPM GUI interface which you can find in Mandrake Control Center, under the heading software management. To get Mandrake's RPM GUI to see your new RPMs, do the following:

(1) as root, create a directory under /root in which you will put those RPMs and only those RPMs.

(2) Call up Mandrake's RPM Gui and select "Add new software source." Put in the full path to your RPM directory above and complete whatever other fields are necessary.

...and then you can use Mandrake to do all of the uninstalls and installs. Before, adding an RPM to your new library, you probably want to check it out extensively, including using KDE to look it over while you are logged in as a regular user.

Like Fancypiper said, drop the .rpm from the file name.

To find out what's installed:

rpm -qa | grep -i wine

That will give you the package name(s) to enter in the rpm -e <packagename>

Thanks all, very helpful info :-)