displaying postscript slides with page(1)

does anyone know how to display postscript in landscape mode in page?

another thing, when displaying dvi slides (created with the latex
available for plan9) page (or rather dvips) displays the text in the
right direction, but the page is still in portrait mode and the last 1/3
of the text is cut off.

on the other hand same slides created on a different machine are displayed
rotated 90 degrees counter-clockwise.

the dvipost filter for lp doesn't seem to produce anything (tried with -L)

any suggestions are welcome :)

andrey