Can't configure wireless card [Realtek rtl8187se] on Ubuntu 9.10

Please read site below. Ubuntu 9.10 has been EOL (end of life) for years. Suggest you install a supported release.

https://wiki.ubuntu.com/Releases

Ok, thank you, I will install it and see if it works.

So, I don't know how to upgrade Ubuntu, since I can't access any network. Is there a way to download it in a Windows running computer? So I can install it manually.

Yes. The sites below will give information on how to do it. This will not be upgrade, but new clean install. Any thing important on 9.10, needs to be backed up, and reinstalled on 14.04. Will this be Ubuntu only or a dual boot with Windows? 14.04 takes more power to run, than 9.10. There are two lighter Ubuntus, Xubuntu and Lubuntu. Be sure to do a MD5sum test. If you burn a DVD, burn as slow as possible.

http://howtoubuntu.org/how-to-install-ubuntu-14-04-trusty-tahr

http://askubuntu.com/questions/449271/ubuntu-14-04-installation-with-usb-flash-drive-problem

http://www.ubuntu.com/download/desktop

https://help.ubuntu.com/community/HowToMD5SUM

https://help.ubuntu.com/community/BurningIsoHowto

https://help.ubuntu.com/community/Installation/FromUSBStick

This is a lot of information, go slow and it will work.

Yes, the instrustions are on the download page: http://www.ubuntu.com/download/desktop

ubuntu only
thank you very much, i'll try it

ubuntu only
thank you very much, i'll try it