I just came across an extremely well cared for 2008 24" iMac, and don't want to do a lot of opening-up and surgery on it if I don't have to, but the HD is so sluggish (previous owner said it was getting slower and slower over the years, and sometimes the beachball is there for 20 minutes just opening a web page). I will only use it for browsing, so is there a minimal upgrade possible where I could PLUG IN an SSD externally and run it off of that? I know there are speed limiting factors, like the SATA 2 and whatever the cable might bottleneck, but for just browsing, and externally connected SSD should work as an improvement, no? If anyone knows of an easy way to do this (it's worth me buying whatever cables and so on to do this, as I'd do it to more than one computer I have here as I needed them). Price for parts is not as much an obstacle as if they are external, I can always recycle them to the next early model computer. Thank you!