Picasso IV on LCD monitör

[gaddar]

Hello,

I am using Amiga 4000 with Picasso IV. I've just bought Philips LCD monitor I can't get 1024*768 or 1280*1024 resolution on LCD. Monitor keeps saying that "Change to settings to 1280*1024 60hz". However 800*600 PIV mode worked just great! Can I get 1280*1024 or 1024*768 on my LCD?

and here is the link for features of my LCD:

http://www.goodgearguide.com.au/index.php/taxid;1549691195;pid;1215;pt;1

thank you..