Project planning software - Gantt plans

I am a small company fitting out hotels...

I need a form of Gantt plan...which lets you put in projects and info on the projects...when you turn it on it should be at todays date...and be flexable ie. working on weekends and holidays.

I have looked in the net but to find one which is good before you buy it is difficult to find.

anybody have a idea?

Try this one at sourceforge.
It's free.

Gantt Project

Found that one but it wont let you plan weekends and holidays as working days...sometimes we need to!

Try the open-source PhProject. (English language website available, don't get scared off by all the German)

This allows to schedule weekends.