So the Arduino is USB1.???????????
(was the only thing I wanted to know)
Thnx for the replies, and mentioning the USB extendercable, very interseting.
Ehh... a decent RS232 Cable off that Lenght will cost the same as that USB1.1 - CAt5 converter.
Also, cabling cat5 (AKA standard network cable) is way more easy since the plugs are very small.