How can I open/convert a .pub file without publisher?

[RandomTom]

I've tried the online pdf converters but they're no use thus far as the work I've been sent is size A3.

Thanks to anyone who can help.

 

[K.C. Leblanc]

60 day publisher trail?

http://us20.trymicrosoftoffice.com/product.aspx?family=publisher&culture=en-US

 

[AtreuS]

Maybe the publisher clone included in sun open office will open it? its still free i think.