My recommendation is option 1, aka
http://www.bintel.com.au/Mounts---Tr...oductview.aspx
You may not want to now, but in the future you may want to run ASCOM to control your mount.
I started off by using the included cable and going via handset first. I also used my guide camera built in guide port to connect directly to the mount and just used Stellarium to issue slew commands. It works, but the lack of mount control was a big bummer.
Ended up getting the shoestring cable and happy i did.
@bojan:
Are you running with the hand controller in the middle or direct shoestring from laptop to mount?
If going direct, you need an additional program: Stellarium Scope
http://www.welshdragoncomputing.ca/i...d=31&Itemid=39
If going via the hand controller, make sure you have setup the telescope and started it via the stellarium scope settings page. If you plugged the device into a different port its COM port may have changed so make sure all the settings are correct in that page and that it says "Connected" next to the scope.