Recent GW troubles plz hlp.

Ok heres the problem 2 days ago i wake up to the ups guy delivering my new 1GB ram later i install it. Today im tryin to play GW and i just login get into the city and find i can move like ten steps and then its like i freeze up and slowy come to a stop. When i do get out of a town its fine nothing happens and i can walk around normally. When i minimize GW i find my CPU 100%, now i dont think thats the problem becuase all the new games do that. I restart my computer like 10 time thinkin its something like that but no it still happens. I run 2 diff anti spywares but nothin still crappy. I dont know what it could be because i have played GW for like 6 months now i dont now if the ram has anything to do with it but i would like to get to the bottom of this because i cant play it . Another thing is when i look into the install directory the .Dat file is 1Gb 900 Mb. I dont now how that could be because on my other comp its only 1.2 Gb but that computer hasnt been on the internet to update GW. Could there be some kind of new bug or something wrong with my GW? Im gonna try reinstalling it and hopefully it will work but any ideas of what this could be could be alot of help Thankyou....

GW is 1.878.433KB here so you are right with your 1Gb 900 MB. try reinstalling GW. If that doesn't help do a memtest. http://www.memtest86.com .
and if that doesn't help you can try reinstalling windows, but it looks like a memory issue

Is your RAM compatible with your computer?
Different type of RAMs have different speeds, you can't just go buy a 1gb ram.
For example:

Kingston 512MB 200-Pin DDR Memory (PC3200)

is vastly different from

Kingston 512MB 184-Pin PC333 DDR Memory

btw switch to your old memory and see if you have the same problem. Also there is a possibility you damaged your video card somehow while changing your RAM?

ok ok too answer your ?'s (I am not a complete noob to computers)

I have two sticks of Azen 512MB 184-Pin PC400 DDR (the company said it worked with my motherboard)
and ill try switching back to my old memory but why would it come up 2 days later instead of this happening then? but ty

The only reason why I ask you to switch back is just strictly troubleshooting reason at the moment. Since you say your a complete noob at this I guess I gotta ask a few standard questions.
Did you install the RAM properly? Like does windows recognize you have the new memeory installed? If not then check to see that the RAM stick is snuggly pushed into the slot (there should be a light click or something).

um please re read my post , and yes windows does recognise my ram in system information and also Everest (a computer diagnostics program) also recognises it. So i dont think that my ram has anything to do with it because this happened 2 days later from the day i installed my ram.

lol sorry, I didn't read it properly :P I was tired and skipped a word I suppose :P.
I would still change the RAM up and see if the problem still happens.
Can I get some more detailed specs of your computer?

ok i got it working again all I did was uninstall GW defraged my harddrive installed GW again and defraged my harddrive again and plays smooth. dont know what it could have been couldve been something wrong with my GW or could have been that it was fragmented... wierd.(thankgod it was nothing wrong with my computer I was gettin worried there). thanks for the replies though.