[ale] Need help printing from Kubuntu

[Linda L. Hull.]

My husband has Kubuntu Feisty, when he tries to print
on our HP 7210 all-in-one printer, it tries to print in COLOR 
and not black--even on grayscale.

He prints a lot daily, the color cartridge has run out of ink.

My computer (Ubuntu Feisty) isn't doing that (praise God!) but what
can we do to fix it?

Our son moved to Texas, I'm not technically inclined, he said he would
have to be here to mess with it.

My husband had a stroke and can't do this. Printing is very important,
he uses typing/writing to communicate.

If someone can help, I'd trade making dinner?

Linda