How to adjust external monitor on Fujitsu Siemens laptop?

[takis_1979]

Hello

I would like to ask someone more experienced if there is a way to adjust external monitor screen resolution on Slackware Puppy 5.3.

I have a FS Esprimo V5535 - T2390 laptop with ATI graphics card and an external 19'' LG TFT monitor that is not recognized at all on Puppy so its resolution is 640X480.

Is there a way for Puppy to recognize the external monitor and then change the resolution to 1440X900?

Thank you very much.....