Every titlebar skinner app available is pure crap because it's a hack.. I don't imagine that they will EVER be reliable..

If you're using WindowsXP, you should check out StyleXP. It lets you not only change the titlebars and titlebar buttons, but also every aspect of the Windows UI (skinnable scrollbars, buttons, lists, menus, you name it) and it is _not_ a hack.. it is _not_ slow.. and it does _not_ suck..

Unlike every other window-skinning app.. because it simply uses Windows XP's visualstyle system.

You might even be able to call stylexp to change a theme from the command line. not sure..