I purchased Ibrowse 1.x new years ago when it came out. I still have the disks and the serial number but I lost the packing. I tried to upgrade to 2.x and was not able to because I didn't have some information from the original packing/box whatever.
I gave up on it at that point when I was advised to just re-buy version 2.x because 2.4 was soon to be released.
I hope it works out for you. BTW there is still an active Ibrowse mailing list in the Yahoo Groups. Perhaps someone on the list can help you?
Jeff