Darimc, yes by all means feel free to post your version (editd/animated) version of the crowbar. All the models I post here are free, free to use, free to edit, free to enjoy.
Cheers!
btw here is a sword I made when I saw a nice reference image in a different thread..
you can go to the thread and download the .x file and texture..
http://forum.thegamecreators.com/?m=forum_view&t=133335&b=3
off hand I'd say 250 poly's or less= low poly model, 250-600 medium ploy model, 600-1k poly's = large model. anything over 1k poly's is what I would consider High Quality model suitible for rendering/ray tracing type jobs.
That said, a low poly model with a great texture can often look as good as a high poly version of the same. One day I'll fool around with normal and bump mapping.. Jon Fletcher's thread has shown me that this adds a whole new dimension to the look and feel of models.
Cheers!