Windows 7 snow leopard skin

I changed the skin, and now i use MAC OS X. Everything is perfect, but i can't change the fonts from right click on desktop...I want them just a bit bigger.
I tried with WBS but i have a problem after i restart. I cannot logon again.
Is there a way to modify this from regedit ?
Thanks

 

[Highwayman]

I'm more curious as to why you'd want it to look like a MAC... Kinda like putting go faster stipes on a Bugatti

 

[thomas24]

Don't be curious ...