NF wrote:
Hints, ideas and recommandations are very appreciated - offers will be
considered.

Will 250$ / 200? get me going?

Holux GM-210 GPS with 12V power converter and connector for iPAQ 36xx
series is $100. You can buy additional adapter cables for other models
of PDAs and USB for around $10 each. They've worked for me...

http://www.gpscity.com/item-gps-city...10ipaq3637.htm