RAM settings other than 3GB switch
I've got my computer booting with the 3GB switch. I've got 4GB total and I'm wondering if there's any way to use just a little bit more than the 3GB that the switch gives me. For example, I editted the boot.ini file and set it to 4GB. I also tried 3.5GB. I couldn't tell for sure whether they were working or not, but some of the more intensive files I've been working with crashed. They don't crash under the 3GB switch setting.
So I'm wondering if, with 4GB RAM total, I have any options other than 3GB for the switch, and if so, how can I tell if they've come into effect after booting?