After who-knows-how-long, Yahoo! has a preview build to show for the time spent working on the new Vista YIM client. Mind you, this release is missing a lot of the bells and whistles present in the mainstream YIM builds, but that's what you deal with in a preview build with a completely new UI. There are lots of cool things to look forward to in this build, though. For example, if you need to keep track of a few specific people, you can drag them onto the Windows Sidebar as opposed to keeping the contact list open. The rest of the features for you to mess around in are: [*]Entirely new interface that harnesses the power of WPF, the graphics subsystem in Windows Vista [*]Organize your conversations into tabs, or drag and drop a tab out to create a new window [*]Keep up with your favorite contacts by dragging them into the Windows Sidebar gadget [*]Send enhanced emoticons that have some extra oomph [*]Change the color of your IM windows with a built-in skin chooser. Go crazy with a different skin for every IM window [*]Adjust the display size of your contacts with a handy slider [*]Arrange your contact list into multiple columns just by resizing your window [*]Send instant messages to your Yahoo! and Windows Live Messenger contacts [*]Send files to friends as large as 2 GB [*]Find contacts quickly with the contact search bar. Type in a few letters of the contact