Moving old project to newer versions

I am new to Blackberry. Present I am working on 4.7 Blackberry component pack.Now I want to move my old projects to newer versions like 5.0 and 6.0. For that I installed eclipse Galileo 3.5 version and configured latest component packs and Blackberry java plug_in 1.1.2. I searched in google and find somewhere that use File menu option Import>Import Legacy Blackberry projects and it is ask开发者_开发问答ing .jdw file in the workspace.I dont want to move entire workspace, I want only single project. am not able to find it.can any one help me to get this......

In Eclipse, for your old project, try to compile with the new JDE like say 5.0. See what breaks, fix it, repeat till it compiles. Then run on handset to ensure it looks ok.