[Toolserver-l] Key poblem logging in with putty

[toolserver-l.wikipedia.org at publi.purodha.net]

I am usually using secureCRT - http://vandyke.com/ - to
log in to the toolserver.

putty refuses secureCRTs key file ("this is not a key file")
which is the only one I have.

Can I convert the key file, which was generated by openssh,
to a format that makes putty happy?
If so, how do I do that, or where to find appropriate infos?

Or should I rather generate a different key pair for putty?
How would that be done, and how to implemet it, without
superseeding the one already in use with secureCRT?

Thank you for your help!

Purodha