Upgrading Computer... What should I get

Hi everyone.

Im going to be upgrading my comp soon and Im wondering what I should get:

My Current Specs are:
Intel Quad Core @ 2.4ghz 2 x 1gb kingston value ram + 1 x 1gb some noname ram
NVidia GeForce 8600GT
350W NoName powersupply (came with case)
Asus P5B Mobo
DVD Writer phillips i think

Stuff I want to Upgrade: (price range)
Graphics Card - ($150-200)
Ram to replace 1gb of NoName ($1-50)
Powersupply ($40-60) [somthing around 500W]

And I also wanna note that I game ALOT so i need upgrades for gaming for now and that should last me for a year or so.

Edit: I might add I have a 22" LCD Monitor and resolution is usually 1650 x 1050 and I want HIGH HIGH HIGH settings :)

Yea right now I have 3GB im also using vista but im going back to Xp because Vista is garbage. Makes games, programs... everything run bad, slow and trippy. I want 4gb, i think on Xp theyll register it as like 3.25 or sumtin

And i kinda want to spend $350 or less for new gpu, psu and ram.

Umm games mainly getting bad fps compared to when i ran them on XP. Programs start slow (games too), alot of times programs will cause comp to freeze. Comp crashes too like once or twice a week.

How do i disable those things? I think i disabled indeing.

no i used windows updater... sp1 didnt install used website and install didnt work either

Edit: install Sp1 now hope it works

1) Get a reliable PSU, at least 450W

2) Get a Radeon 4850, or wait and see if the 9800 GTX+ will materialize.

Any good nvidia cards for $180ish cause I heard ati drivers sometimes dont work.Helbrec

That's a lie. ATI releases monthly WHQL drivers. That means they are thouroughly tested and get certified. Their drivers are stable and give a performance boost in several games every single month. Last I checked Nvidia releases more beta drivers than certified ones. You'd be getting a slower card because of a false myth.

didnt work so im going back to XP much more reliableHelbrec

Most computer tech people I know say it's not Vista it's people are too stupid to use it ;)