You need to install the following items only if they are not currently installed.
That is, you don't have to re-install them.

Please use Cydia on your iPhone to install WinterBoard.
(You need to be connected to a WiFi or EDGE/UMTS network.)
Open Cydia and declare yourself a Developer when asked.
Follow all the update steps (if any) that Cydia requires or suggests.
WinterBoard will open an exciting world of themes to you!
Go to Cydia -> Sections -> System -> WinterBoard and install.
iFuntastic uses additional tools to enhance its functionality.
I'm not permitted to include these with iFuntastic, so please install them yourself:
Cydia -> Sections -> Utilities -> Erica Utilities.
(The Utilities seem to come and go; they are not vital, they are for convenience.
If they don't show up in Cydia, then that's OK, too.)
Install the following to allow iFuntastic to take screenshots automatically:
Cydia -> Sections -> Utilities -> UIKit Tools.
If you (optionally) wish to install SSH at this time, then
go to Cydia -> Sections -> Networking -> OpenSSH and install.

Click 'OK' when you are done, or if you wish to skip this step.
Click 'Cancel' to abort the installation.
The installation that follows will take on the order of 15 minutes.
Stick around for the required restart (possibly two) early on.
Once iFuntastic starts building indices you can go grab a cup of coffee.