Vista - Headphones are not working

Okay:

About 2 days ago i installed SP1. After installing i noticed my headphones not working so i checked them on my mp3 player - everything was alright. Then i thought it could be the jack port, so i tried to clean it - no results. My dad was gone so i had to handle myself. Googled and found this forum. Then i thought it could be drivers, because many people are encoutering this problem. I downloaded Realtek drivers and nothing!
It is possible that i don't know what drivers i should download.
And motherboard is Gigabyte a micro model, don't remember the numbers.

Help would be appreciated

Realtek would be your *soundcard* drivers - do you headphones require separate drivers? If so download *those* and reinstall those as well.

I don't think my headphones require any drivers, because before SP1 they didn't. Also, my motherboard is my sound card (i don't have a separate sound c.), but i don't know if this is important.

that is important - uninstall the current drivers for your motherboard sound in device manager, and then reboot and reinstall the latest version.

How can i know what drivers are for my motherboard? I installed the newest realtek drivers which i found here, but they don't seem to solve the problem :/

Go into device manager and see if your HD audio cannot find the right drivers, or if it can. If it can, then make sure you set up the Realtek devices afterward (there should be a new icon in your system tray).

Well, I have a polish version of Vista, so i'm not very sure if i'm doing it right.
START > Control Panel > Device manager >
and here i have (would put a screenshot if knew how)from the top:
+graphic cards;
+network cards;
+keyboards;
+computer;
+controllers of sound, video and games;
a few thing i can't translate;
+Monitor;
+mouse and other pointing devices;
+ports (COM and LPT); procesors;
+disc drives;
+disc drives CD-ROM/DVD;
+devices of HID;
+system devices


in controllers of sound, video and games i have Realtek High Definition Audio which says is working properly
in system devices i have something which is: Controller compatible with High Definition standard which is also working properly