Bad jagged lines after reformat

Hello & thanks for looking,
I think this may be a graphic card issue, but i'm not sure.

I reformatted my computer last week due to a bad virus,
and everything seemed to be running perfect and clean
until i reinstalled Flash CS5.5 to see that all my art is jagged and
horrible looking. Before the reformat all the lines were smooth as
can be, and now it's only slightly smooth when i zoom in very
close. The further i zoom, the clearer it seems to become
for some of the lines.
I've tried some basic fixes i found on google without any effect (Change view-Full, Nvidia options changed to 'application overide settings' ).
For some reason i do not have a Anti-Alias option in my flash preferences,
but i tried changing it to every option from 2x-16x in Graphic card options.


I've installed most the drivers from HP and updated the graphic card,
here's system specs in case it helps.
----------
Windows Vista 'Home Premium
Service Pack1

Pavilion e9180f Elite
Intel(R) core(TM) i7 CPU 920@ 2.67GHz
9.00GB
64-bit Operating System

Nvidia Geforce GTS 250
Resolution
1920 by 1080 (60Hertz)
-------------

in the example picture you can see how
some lines are less jagged, when others
are a mess. There's no difference in quality between
regular paintshop and Flash cs5.5 for me, if anyone
could share some solutions i'd be very grateful.

Let me know if anymore information is needed, Thanks!

http://oi52.tinypic.com/rw4392.jpg

 

Do you know anyone esle with flash? I dont think this is hardware related and suspect it is either a problem with the flash configuration or the files themself. If you can try the files on another PC with flash working then that will tell you whether it is your files or the PC.