BleepingComputer.com: Internet Settings Question

A couple of weeks back I came across a link on how to improve/speed up IE7 on these forums. I have spent the whole morning searching for it but can't find it again.

The link in question detailed how IE connects to the net using one of three settings.

It gave three options from always showing the most current page (default setting) which it said was the slowest setting to one which it said was the fastest but recomended the second one and to which I clicked and applied ok.

Since doing this i have had minor probs with certain sites I visit and would like to undo the changes to see if that is the solution but I cannot find the link and cannot remember where on my PC to change it back.

I am sorry if this is vague but hopefully someone will know what I am talking about.