FireGL2 & Maya Display Issues

Hi,
My hard drive crashed recently & I had to re-install Maya 3.0 unlimited. Everthing was working fine before but now when I select any object it seems to randomly change color from blue, green or grey when its in shaded modes (everthing renders correctly though). Has anyone run into problems like this before? I have a Dell Precision 420 running Windows 2000 (service pack 2) w/ 256MB RAM & I've tried running the 2060 (Maya certified) & the 2066 (generic) drivers but still get the same result. Any help would be much appreciated. Thanks for your time. - RJ
ps I have directx 7 installed - could this be affecting it? I'm a little reluctant to install directx8 because I'm afraid it will stop my DVD player from working (the dvd never worked before the crash & now it works fine).