I'm glad you are happy with it.
Couple of pointers being new to SE.
Firstly get yourself a copy of Floats Mobile Agent, teamed up with a usb bluetooth adapter I am able to text from my PC and loads of other handy stuff.
Esato.com has huge forums dedicated to everything SE usually anything t610/t630 will also work for your z600.
Deviantart.com has loads of themes often of very high quality (generally theme sections can be very poor)
The charge anywhere kit for Ericsson by Expansys is great
http://www.expansys.com/product.asp?code=EXP_MOBUSB2
I can charge in my car, from my pc or worldwide.
Also I picked up an old Ericsson charging stand for a £5 from a bargain bucket in Phones4U (shudder). More of a gunmetal than the SE silver so matches my desktop better.