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first open nautilus

second right click on file icon and select 'Open with Other Application..'

third click whichever program you want to use or type in a custom command

then it should open...

Kumusta

my favorite 2d game is lbreakout2

sudo aptitude install lbreakout2

my personal favorite is tremulous
http://www.tremulous.net

it's in the ubuntu repositories so just type

sudo aptitude install tremulous

nice job, added your repository:popcorn:
it rocks:guitar:

if playing morrowind is really important you could use cedega, i use it and it is worth paying the money for it

games work very well under cedega, i highly recommend it
...

maybe this will work
sudo apt-get remove kde4

try this in order:
'alt+f2'
type 'emerald --replace'

what i really like in any linux gaming site is installation guides, gaming.gwos.org does their installation guides very well
good luck on your website btw

tremulous is a great fps with some strategy in it as well
http://tremulous.net/

sudo apt-get tremulous

yes you can try wine
http://www.winehq.org/

it does take some tinkering though

or a commercial version such as cedega (it costs money):mad:
http://www.transgaming.com/products/cedega/