Increase keypool size

[Tirapon]

Can someone please explain to me exactly how to increase the size of the keypool in bitcoin-qt? I've tried messing around creating a .conf file but can't get it to work and I've decided it would be a lot quicker to ask somebody who knows how to do it.

Thanks in advance.

[EDIT: in Windows]

[n4ru]

Can someone please explain to me exactly how to increase the size of the keypool in bitcoin-qt? I've tried messing around creating a .conf file but can't get it to work and I've decided it would be a lot quicker to ask somebody who knows how to do it.

Thanks in advance.

[EDIT: in Windows]

I'm not sure if there's a way to increase an existing wallet's pool size using the default client or if this works in the debug console, but I know you can use the flag -keypool=n via commandline to generate a new wallet with the specified number of keys.

[Tirapon]

That's fine, I can create a new wallet and import my old keys. I just want to have a larger keypool so that I don't have create new backups very often. How do I run that command in windows?