change display number

[lzqtiancai]

Current
#1-TV
#2-left side monitor
#3-right side monitor
#4-main middle

I just recently got 2- gtx 460s, powering 4 monitors. now i dont know why, the graphic card set TV as #1, my 2 side monitors as 2 and 3. then my main monitor as 4.
my problem is
when the windows boot, it appears in monitor #1, and I usually leave the TV off, so I cant see it booting up/bios.....

my question is
How do I Change my main monitor to #1?

Things I tried
1.disable all other 3 monitors, main will appear as #1, But, as soon as I re-enable them, they change back to what number they were, so my main is still #4
2.while computer is off, I switched the #4(main)'s monitors dvi cord with #2's, boot it up, nothing changes.

 

[lzqtiancai]

ok, just solved it, I switched ports when the computer is on. just disconnect in "change resolution" and put my main's dvi onto where my tv was at. now my tv is 4, main is 1!!! haha dumb me...