how to use windows application in linux and the commands to run.
 

am a new enthusiats in linux and
i got a problem with installing windows application,jcreator,flashplayer in linux and also how to download wine and install it in linux.

You can download Flash Player for Linux. As for installing WINE to run Windows apps, why not try reading the documentation?

i have already downloaded flash-player-9-linux.tar.gz and it is already in my desktop but i don't know the commands to run to make it executable.

There should be instructions on Adobe's website, but you need to extract the contents of the tarball, with "tar zxvf flash-player-9-linux.tar.gz" (no quotes and see the tar man page for details of the options). A new directory will be created, so cd into it and run the installation script.

As for WINE, it should be available using your package manager. (Sometimes it is installed by default.) You might also want to look at the commercial version of WINE--"Crossover".
http://www.codeweavers.com/

Is your machine an x86? if so what you have downloaded will work just fine.
However if your machine is an x86_64 you will also need nspluginwrapper.
This application let's you run 32bit plugins on a 64bit machine.
Regards.
The trooper.