dual monitors problem

hi all. ive got a dual monitor set up on a ati radeon 9200se card
I have 2 viewsonic monitors one is a ultrabrite a90f+ the other is a
viewsonic 17gs. the 17gs is alot older than the a90f. The 17gs is going threw a dvi to agp adapter.
the problem is there seems to be interfernce . almost like if you put a magnet near the screen but not that bad and it only does it on the a 90f (the side that the 17gs is on) . could it be the display frequencys are diffrent? the a90f is fh 67.7 fv 75.2 the 17gs is fh 53,7 fv 60.1
also when i turn the 17gs on and the a90f is already on it will get all shakey for a second almost like when you hit the degauss.
if i had room on my desk i would just spread them futher apart but thats not an option.
any suggestions or comments ?
thanks J

 

The problem occurs only when the monitors are close together?
Try another monitor?
I doubt has anything to do with your problem, but switch the DVI adaptor to the other monitor.
Are the supported resolutions & refreash rates being applied to each monitor?




Ouote:
"also when i turn the 17gs on and the a90f is already on it will get all shakey for a second almost like when you hit the degauss."

This can be caused by electric overload of the Electric outlet that the monitor is plugged into. when a appliance is powered up it uses a bit more power when turned on than when running. ( this can occur without blowing the breaker or fuse, it depends on how overloaded the circuit is.)