I've installed the internet pack after BB1/BB2/BB3 and BB4 ;-) Actually I've even installed the internet pack then reinstalled BB1 to BB4 again which also worked fine :-)
I bought the exact same card, you need to install Prism2v2 which installs a the wireless command into user-startup.
You will need to edit wireless.prefs under envarc:sys as per the WPA example in the readme. The default one it makes with the install doesn't work :-)
If it's working you should get a blinking led the a solid led on the card. Load up genesis wizard and select the prism device and leave pretty much everything as default.
Some routers you'll need to manually enter in the IP details, so pick something in your subnet range and make sure the gateway is your router.
One thing I've noticed is I have to use Genesis to go offline to disable the wireless card if I want to play some WHDLoad games as they wont load :-)
Sorry don't know the answer to the other questions as I don't own an Amigakit cfcard setup.
You can always use WinUAE to backup the card :-)
