Type Of Key I Need?

[Liakos]

hi all

i have an avensis 1.6 vvti year 2002(old shape)

i buy this car with only one key(the Grey :( )

i am looking for a black key(2buttons) through eBay and go to my local keysmith and get the job done

But there too many types of keys and i am confused,what i should look for 1.same blade 2.key type 3. transponder chip(4C or 4D) or 4.all types is the same and all i need is to change blade and programm the key to my car?

anyone to guide me plz!!!

[Liakos]

mine is 4c as my local key smith says that this is strange and i has to be 4d :S

i abandon the try to make a black key because he said that he never saw at eBay an avensis key :(