Exporting: ps-> eps -> openoffice: Page size

[Ron Piterman]

Hi,
I will need to use Lilypond (2.0) in a text in OpenOffice.
To do that I am planning to use ps2eps and epstools to export the ps to 
an eps.
How can I tell LilyPond (2.0) to use a custom page size, so I get a 
Small EPS which contains only one stave, without the whole white space 
(so I don't have to go through the tedious work of clipping it in 
OpenOffice?

Cheers,
Ron