Thanks again for all the feedback!
I swapped emails with Cliff and he told me that Windows 7 should work fine, but also mentioned I could use an old laptop too. So...I guess it's suposed to be all good? Decisions, decisions, decisions.
If I went with a new laptop the cabling logistics would start with a USB port. (It works through a USB port...right?) If so, I guess I would need to build the following "franken-cable-connection".
A USB to serial port cable...connected to the serial port to ethernet adapter supplied with MyECU...connected to an ethernet cable....connected to MyECU. Anyone on the board having success with this type of daisy-chain cabling, and using Windows 7?
I think I now understand why many of you are just using an old laptop with the serial port built in. A few less backwards conversions to worry about.
Last night I went to my local discount computer store and learned that I can pick up a new laptop, running Windows 7, for about $220 US. That's a single core processor using DDR2 and 2-3 gigs of memory. So, it's not the latest and greatest specs but will be a heck of a lot fast than an old beater. I also found out that the cost of a new motherboard for my dead Dell is around $150 US.
Of guess I could pick up something second-hand but I keep wondering if I'd be buying someone elses second-hand problems, unless of course I find a NOS vintage laptop with XP?
Well, it's kinda funny that in order to pursue advanced performance on my Guzzi...I might need to source an obsolete laptop!
Once again I appreciate all the advice and will be surfing the web tonight for a cheap vintage laptop before buying something new and trying to make it backwards compatible.