Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

My driver's side window lift mechanism is out! Rightly speaking the cogs of the part of the mechanism which looks like a bow are damage so i must replace it. Does anybody know if they sell new ones in abstract from the mechanism?
I found all the part at ebay here' s how it is...

http://cgi.ebay.co.uk/Vauxhall-Corsa-wi ... 7C294%3A50

here in greece you can find all the mechanism new, for 103 euros and of course it's a dummy!
can i fix the cogs by my myself with a way?

Used parts may be cheaper and less work to change, if you wish to repair the mechanism you may be able to build new teeth with weld then reshape them with a file (temp measure untill new parts can be found at the right).