Thank you very much gents. It is such a joy to find your useful replies.
I am sooo sorry to forget mentioning that I have a tiptronic boxster. It seems that this job and its tools required are beyond my DIY ability.
Should I go and get an independent specialist to change my gearbox oil on my newly purchased 2003 Boxster (exactly 5-yr old) with 23000 miles on the clock? In addition, the previous owner had never changed the oil since new.
If the answer is yes, will it be a good idea to replace the RMS (Cayanne RMS part, as I read somewhere) together with the gearbox oil change to kill 2 birds with 1 stone?
Thanks again