Vinod,
Have you checked web sites or tech support phones for both the Trio card manufacturer and the Philips Monitor manufacturer? It looks like you need specialized drivers to fit the monitor exactly. Unfortunately not all video cards and monitors have upgraded to Win98 yet.

Barbara

>I'm using Win 98 with S3 Trio card, Philips Monitor 104s 14"
>
>I'm trying to set screen resolution to 800x600 but its making characters very small & not fully utilizing the monitor (space at the right end side is not being used)..
>
>currently the monitor type is set to unknown monitor and I tried to search driver for this particular model but was not able to find it...
>
>can anybody advs. me how to solve this ??