
After weeks of trying to configure my Laptop to work with a USB to Serial adapter - I had almost given up.
I purchased numerious devices and spent wasted hours trying to get it to connect - nothing
The one that works -
Keyspan High Speed USB to Serial Adapter - p/n USA-19HS, Amazon $ 30.24
I installed the software from the CD (has Vista Drivers), Plugged the Adapter in after the install.
Hooked it up to my AEM EMS - and wolla!!

, It took all of 5 minutes.
Tried it several times - works perfect.