Increasing VM RAM doesn't change in About Mac?
 

I have 8gb ram on my machine and I increased my VM ram for my snow 10.6.7 to 4gb and no matter what I change it to it always says 1GB and of course it doesn't have right processor listed. I says intel duo core 4.3 and I have AMD phenom II 955 3.2. I've been trying to find working 10.6.8 for AMD but none work for me. Is this normal behavior for About this mac? How can I fix it? Is increasing ram actually doing anything? Thanks