Hi w2ibc, welcome to the mad house
Question 1: 2 ways you could try;
1 enter the command line commands you would normally use into rc.local so they run on startup
2 add the line "MACADDR=00:11:22:33:44:55" to /etc/sysconfig/network-scripts/ifcfg-wlan0
save and reboot
Question 2 can be answered by using Konqerer on Super user mode (PC Button -> File Tools), navigate to the mount point and right click on it.
Select properties and then the permissions tab.
Tick apply changes to all subfolders and set appropriate access permissions and ownership.