Multifirmware is great,
make sure you have the 5.01 if you have a blu+
It has pacrom builtin, so you can set it up to autolaunch an app.
It has the new gamepark firmware builtin, so you can use that, just a broken pc link.
The pacrom has a working pclink.
Also, there is the option of windups or yafl launchers. I use yafl, and its loads of fun.
Just hit select while you boot to default to the menu.
Select things in the menu with b to set them as the default launcher (pacrom, yafl, gpfirmware)
Also, can add phodrive as an option on the menu, or configure your menu specially.
Also, now yafl and windups have more backround and themes (yafl).
Yafl themes here
http://home.planet.nl/~essen493/themes.html
Have fun.