For the latest info about Sketchup and Wine, see http://wiki.winehq.org/GoogleSketchup

The resizing bug mentioned above appears to be specific to the OpenBox window manager, and doesn't happen in Gnome. I've filed a bug for it, see http://bugzilla.icculus.org/show_bug.cgi?id=3914

As of wine-1.1.11, Sketchup 7 should work reasonably well if you have a recent Nvidia card, though you may have to set the HW_OK registry entry described in the wiki page above to 1 to get past the "cannot initialize opengl" bug.