Mercedes: tranny fluid, hand pump oil extractor, c 280

Question
I FOUND THE LITTE BLACK CAP ON THE TOP OF THE TRANS,HOW WOULD I DRAIN IT OR DO I NEED A SPECIAL
TOOL ?CAN I DO IT MY SELF THANX FOR YOUR PREVIOUS ANSWER I THOUGHT I WOULD NEVER FIND IT
P.S ITS A 1998 C-280 MERCEDES V-6 ENGINE THANKS AGAIN  

Answer
The first link shows one type of device you could use.
The second and third link are to help you find one that fits your budget.

http://www.autosportcatalog.com/index.cfm?fa=p&pid=3411&sc=7542

http://www.google.com/search?hl=en&lr=&q=Oil+Change+Pump&btnG=Search

http://www.google.com/search?hl=en&lr=&q=Hand+Pump+Oil+Extractor&btnG=Search