Any suggestion about UML diagram tools we suppose to use in phase 2 project?

[Alex Sun]

Which specification we suppose to follow? UML2?

[Wilmar Rodriguez]

You can use UML 1.xxx or 2.xx version. The important thing in your assignment is that all diagrams must be UML Complaint.
[ June 06, 2008: Message edited by: Wilmar Rodriguez ]

[Piotr Uryga]

I've used Enterprise Architect from Sparx Systems. Awesome tool.
It also has "export diagram as image" functionality which comes useful when You're assembling assignment to format acceptable by Sun.

[Ådne Brunborg]

I used Jude Community edition. The diagrams are simple and minimalistic, and all diagrams are easily exported as images (PNG, JPEG)