printer problems

I got a printer from my boyfriend, which is still in good really condition and its HP, like the rest of my computer.

However, i hooked it up and it uploaded everything and printed out a paper i needed. Now, it won't.. i went to Microsft Windows web site and it told me to create a printer and such.. i did that, and it still isnt working.

I have Windows Vista and i heard you needed to upload a driver for it, which i thought i did?

Please help!