I believe Inspire XP was a illegal modification of Inspire and they no longer produce it because it was basically theft of someone else's work.
That would possibly explain why it just disappeared. I am much faster designing with Inspire than stumbling through Flexi and would like to get Inspire onto an XP system but I've heard that it dosen't work correctly on XP. I actually have Inspire & Flexi running on a Windows 98 system both using the same serial key (Inspire key). It was when Scanvec & Amiable first merged and they allowed me to upgrade to Flexi for a couple hundred bucks due to the instability of Inspire, they told me to just to use the old Inspire key for Flexi, works with both programs.
Speaking of keys I have an interesting story I'll share. When I built my first XP system (when XP was first released) I purchased a second site license for Flexi (basically $1,500 for a USB key) which I believe was manufactured by Aladdin. The computer acted very strange, would boot into system bios set-up sayin that the "system hung due to an improper cpu speed setting". This problem baffled my computer tech that built the system, as well as the folks at AMD, ASUS and several computer service centers here in Sacramento. The best part is that in the 18 month diagnostic period of what the problem might be there occured 2 fried processors and 3 mother boards and still noone could figure out the problem until one day I just unplugged the key and presto, it worked fine. Turns out Aladdin released the new USB keys with a defective driver that would load into the system bios chip set and cause all kinds of havoc, no apology or compensation from SAI , was simply told to go to Aladdin's site and download the corrected driver. Problem solved, puter still works fine.