Hi, Pedro José. This is what Microsoft says:
"Office Project Server 2007 administration functions require Microsoft
Internet Explorer 6.0 with the most recent service packs or Internet
Explorer 7.0.
All other browsers other than Level 1 browsers are not supported for use
with Office Project Server 2007. This includes all Level 2 browsers such as
Firefox 1.5, Mozilla, and Netscape Navigator 8.1.
Older browsers — such as Internet Explorer 5.01, Internet Explorer 5.5x,
Internet Explorer for Macintosh, and older versions of third-party level 2
browsers — are not supported."
Wilt