How to change the currency symbol? I've been trying but no.

Ok.
You will need to obtain a SRV key if you want to change the currency symbol for your domestic currency. i wouldn't bother with this unless you really need a currency symbol.

To change Tax status for depts, use code 2111. If it is not in your book, just let me know. there should be tables showing the method for turning on or off tax numbers for each department.

Mark