How to set standard folder for checkouts?

When I go to Bazaar, Start, Checkout, it would be nice to have a standard checkout folder set. Currently it is only set to the last checkout location if I did a checkout first. But if I create a new project and go to Bazaar, Start, Checkout and browse to my branch to checkout from (e.g. W:\BZR-Repository\projectname\trunk), Bazaar Explorer did suggest a checkout location on W:\BZR-Repository\projectname\trunk\trunk or elsewhere (I couldn't yet figure out on which base the suggestions come from).

I would like to have an option to set the default checkout location to E:\project\projectname for example. How can I do this?