I wonder how this will influence the price/liquidity short term.
No it does not. Install GNU/Linux and keep your moneroj on your own computer under your own control.
I would like to buy a new Windows box and hold Monero there in cold storage. I have no interest in learning Linux. Is there a 'for dummies' guide to applying a graphical Windows shell to moneroj?
Forgive my ignorance.
MoneroX exists, so you can have a "windows shell" for monero.
Also, cold / paper storage is really easy to set up. You can do it with your current windows box. Disconnect your PC from the net (unplug or disconnect wifi) Run simplewallet. Make a new wallet file. Copy down the word see mneumonic thing (on paper). make the password something ridiculous - just mash the keyboard. Copy the wallet address into some other file. Then delete all of the files associated with the wallet.
The only benefit to doing a cold-storage wallet with a live-linux setup is that, technically, those files are still on your hard drive... using the live linux CD prevents this from happening. Or you could find a "secure erase" thing to delete those files.
Also, Ubuntu is reeeaalllly easy. It looks like windows.