Making one mesh after animating

[Cyber8]

Hello,
I have an animated model with multiple meshes and now I can't figure out what can I do to put it in single mesh to export.
Whenever I edit mesh and attach all parts the rigging gets messed up. Tried rerigging every mesh one by one, but still parts happen to offset from their original position.
Any clue what can I do?

[The Happy Friar]

I use blender 2.49 and when I export multiple means it doesn't have a problem.  When you say you edit the mesh and the rigging gets messed it it sounds like you are moving in object mode vs edit mode.  Does it look messed up in the 3d program or just the game?