To use vanity coin gen its very easy.

I use windows.

Open a comand prompt and go to the directory you put vanity gen in.

An example would be

vanitygen -X 73 -t 4 White

the pc will run and genate and address with its privkey.

This privkey you need to copy then import that priv key into your wallet.

The wallet will then run and generate the address (that you just made) from the private key.

Not all words work with vanity gen so if you try WHITE... it wont work as its not a valid address.

Try different combos to see what works.

Start with W

then try W  (something else )

and keep building till you get a cool address.

The longer the address you want eg :Whiteknightsofoldandverycool...

will take forever to work out (prob a hundered years) so dont try..

remember its brute force to work out the address priv key.

Practice importing a privkey into your wallet. See how you go.

Cheers