Hi, I found a solution, it works for me:
Always put an autostresh layer on your pages and play with "aling" in text or boxes.... (so easy)
Another one (the solution that works ยก)
I bought an old video card (do you remember PCI cards?) and an old monitor and installed it on my pc. For just 80 dollars I have a graphic station with two monitors, the big one to design (1024x720), the second, to preview how my pages looks in 800x600 resolutions.