Protoss 8 (the last one) in BW is where you have to get Zeratul and Artanis to the temple and protect it right? Just making sure I didn't confuse the levels.

As far as how I beat it, I just took out the center base (between the two P starting locations), built up a goon/zeal/templar force and took the temple. Started the timer and waited. I actually almost lost at the very end but the timer was up when the temple as about at 50%.