Finally i went to work(been lazy a lot, until my father took away the most powerfull(although 4 years old!) computer) and all my dreams are focused on buying new comp. I've been playing with all kinds of configurators on the internet and that's what i've created. Years ago i've been interested in computers a lot, but now I am mostly focused on cars , so I dont have much information on todays technology . I would be grateful for any kind of help.

Procesor: Intel Core 2 Duo E7200 2,53Ghz
Motherboard: Asus P5K/EPU (P35 2xPCI DD2)
RAM: Kingston 2048MB 800Mhz HyperX CL5
Graphic Card: Radeon HD4850 1024MB 256bit
Hard drive: Maxtor SATA II 320GB 7200rpm 16MB cache
Monitor: LG 22" K227WT (DVI) ( http://x-kom.pl/index.php?show_prod=24224 ) or LG 24" W2452T (DVI) ( http://x-kom.pl/index.php?show_prod=32214 ).
Speakers: Creative Inspire 7.1 T7900

Is there anything better for similar prize? And what about monitors, they have similar prizes, but LG 24" is fullHD, what's the catch? I mean I still have to earn half the prize but at least I want to be ready ^^.

The one thing I always advise friends who ask about PC's they are thinking about getting in the future is not to look at anything now.
Always wait until you have the money, because if it's more than a month away the chances are at least one component will have dropped in price (disasters at a production location aside).

What you have specced is quite nice but if you aren't buying now then just take it as a reference point and review things when you're close to buying.

As far as full HD goes every LCD monitor >22" I've seen is HD because monitors always have a higher resolution than TV's. That's why a 30" HD TV costs much less than a 30" monitor. Basically monitor companies are using HD-Ready as a marketing ploy.