I managed to install Kalyway Leopard 10.5.2 somehow, yay! But it runs only with 1024x768 resolution, displaying same picture on both of my monitors.

PC Specs are:
AMD 64 x2 3600+
Asus M2N-E MoBo
2x1 GB Corsair DDR2 RAM
ATI x1600 Pro video

So, I have Samsung SyncMaster 2243BW connected via VGA port and NEC MultiSync LCD1770NX via DVI to my x1600 Pro card. For some reason, OS sees only one "unknown display" and offers only 1024x768 resolution.
The question is, how, and if it even possible, to:
1) Change resolution to at least 1280x1024 (Should i try any third-party programs? Is any of them freeware?)
2) Expand workspace for two displays (Does Leo work with VGA port, anyway?) and activate multidisplay support