That first paragraph could have made more sense, but I'm sure you get my point :P

Just use the SU feature to switch to quickly switch between accounts. Add a bookmark to your browser toolbar that opens the site up under different accounts..

There is actually no 'System account'. These are actually just guest posts given a poster name, and it is only something that happens on the forum.

Okay, I will do that. I assumed it was an account of sorts (or could be turned into one) given that all accounts are part of the forum. Thanks for the explain (again), though I still have no idea where I mentioned this originally otherwise I could have looked there for your response :)