Can't add skins to netbook

Hi I’ve downloaded and activated the Free edition of Ultramixer to try on my Acer Aspire One netbook.
I’ve downloaded the appropriate skins 1024 x 600 for Free and Home versions and added them to the Skins folder in the prgram file. I can’t find any way of selecting them! :confused: When I open up Ultramixer I can’t see all of the interface because it opens in a different resolution. There’s no “Menu” button visible to select!

Can anyone help please?

AHH found it! ALT - U !!!