Just found this link to an apk that claims to port over the working full flash program from 2.2 to work with 2.1. From reading the comments, it appears it only works with HTC phones because of the flash lite already on them. I installed it, and tested a few sites and it seems to work great. I didn't to a test before I installed it to see what sites didnt work. ANyway, here's the link if anyone wants to experiment.
Adobe Flash 10.1 full support for Android 2.0 and 2.1 Download and install apk
Adobe Flash 10.1 full support for Android 2.0 and 2.1 Download and install apk