Hi,
I had a lot of trouble and decided to go on eBay and buy an DELL XP. I chose DELL because they have have the windows activation key on them and the restore disks are only 10 dollars.
I bought one with just a DB9 and it worked great.
Still had connectivity problems but after playing with it for a while I could always get to work.
In Device Manager make sure you have you Uniden driver installed.
Sometime it drops out for some reason them you have problems.
Be careful though.
I say a DELL that had both a RS 232 and DB9 which was an XP.
It did not work well it seemed it was to old to handle the software to control the radio,
These XP laptop computers can be had for less than 100 dollars.
Best Regards
Ted