Means Test Income question

[Pennywise]

I am considering filing ch 7. I am married but I am filing separate from dh. I am not working. The question concerns this : If you are married, living together, but filing singly:
Enter the portion of your spouse's income that was NOT used for your support
or the support of your dependents:

Should I leave that at 0?

Also - does the Nolo book cover stuff such as this? I am thinking about purchasing the online version.

[Pennywise]

Ok, did some more research and sort of answered my own question, but does anyone know what is exceptable? How much of husband's income can I put down as not used?