After my "awesome" self-built Windows 7 desktop decided it didn't want to work anymore, I decided reinstalling Windows for the 5th time in two years would be a waste of time. So I went downstairs and started using my brother's old 2008 iMac 24"/10.5.8. Worked like a charm. I want to upgrade it to Mavericks and get it as close to a new computer as possible. I mostly do light tasks (word processing, web surfing, Netflix). Questions: -I understand Apple says the most RAM I can put in is 4GB, but keep seeing people successfully using 6 and 8GB. Can I go that high? Any suggestions on which RAM should I use? -The router in our house is an old "g" type (I've been away at school). The iMac runs on wifi and is a little slow. What should I upgrade that to? Is the AP Express or Extreme worth the premium over other routers (e.g., Linksys)? -Is it worth it to upgrade the hard drive? I think it's 320GB. It is nowhere near full. -Any other upgrades I should consider for this computer?