redesign my room

I have gone to a furniture dep. store and was looking at all the great BoConcept etc. stuff and was thinking if I only had more money so I could afford more of this goodness for our house.
You know most of the really nice things are expensive. If someone says You can’t buy happiness, it depends on what makes you happy, but in general, happiness is the most selling one of all the goods..

I’ve got this old mattresses lying around my room and can’t make some time to get rid of them…

This is a photo my table. I don’t spend much time there, but this is going to change since I want to move the PC here.
In the picture there are several marks. The red ones signalise the things I’d like to get rid of. With yellow is marked everything I’m not sure ‘bout it, like if to keep it or not, maybe only redesign it, change the colour of the thing. And finally green marks are over everything I’d like to add there.
As you see there is the PC marked with green. I’d like to put a PDA cradle on the table also, and there’s a lamp you can’t see in the photo. On the left should be a waste bin.
The chair marked yellow isn’t that ugly, but it isn’t my style. I’m not sure if I should keep it or buy a new one. Because new chair is a pretty big investment. You know.
Then I’d like to ask you, all of you, for help. If you read my post and have an idea what and how to change, just share it with me and others.
Thank you very much.
Squeezebox

Well my room looks almost like eight years ago, when I was 11 / 12. There are many small things I don’t really need, mess everywhere. And the room has no real design idea. I have gathered many ideas about what to do about it. But some are too expensive, so they have to wait until I will get a new job (this autumn I hope).
But now I can start with organizing my room. And looking for new ideas, so if you have any ideas, leave comment please.
I’m going also to post here photos of my room, so you can tell me what you think I should change.