The newly-launched WordPress 2.5 (download; release notes; changelog) has got some great improvements to the WXR import feature that lets you pull a file of posts, pages and comments exported from one WordPress installation into another:
The newly-launched WordPress 2.5 (download; release notes; changelog) has got some great improvements to the WXR import feature that lets you pull a file of posts, pages and comments exported from one WordPress installation into another: