VistaStudio Logons and Bootskin themes are created with the programs themselves. In other words, I make VistaStudio Logons which you can find in my gallery, usung the VistaStudio Logon Program As far as WindowsBlinds Skins, that gets a little more complicated. Stardock SKS Skinnning Studio (up to here all programs come with ObjectDesktop) and Adobe Photoshop are the standards along with other programs like C4D and other modelling programs. I have never made WindowsBlinds skin, next on my list. 
I hope this helps you some. Hopefully others will post after me. 
