i checked http://www.gigabyte.com/support-downloads/download-center.aspx?ck=2#9 (for about an hour) but i wasn't able to find the ga-rc415 model.

and of course i don't have the cd.

is there any place where i can find drivers for old motherboards?

[recovering disk space, attachment deleted by admin]I think this is likely to be from an OEM PC, and therefore a custom model not listed on Gigabyte's SITE.  If it is from an OEM PC, do you know the make and model of it?  We should be able to direct you to the correct drivers from there, just going on the specifications.
Is itt hat you're missing certain drivers, or need to update them, or you're reformatting and therefore need them all, or...?how can i find its make/model/etc? is it tagged somewhere on the motherboard?

im going to REFORMAT.No, the model number you've written above is the model of the motherboard, but because it's an OEM board, Gigabyte don't have it listed.
Was it a prebuilt machine, maybe a Dell, HP, something like that?i built the pc myself, but the motherboard broke a few days go. so i got this old ga-rc415 as a quick replacement. there is a sticker tagged on it:

"LG TA#002
C2D-1.8G/215
1 M/BIOS: YF04
LGE/DKP/MLB/EBR3684401/'07.05"

aside from that i got no other information about the board.

is that any help?Ah, I see.
Well, your chipset is the ATI RS400, also known as the XPRESS 200, as shown in the second screenshot you posted.  Unfortunately, this wasn't too common back when it was new, and no drivers are available on the AMD (AMD bought ATI) website now.
You could try this DRIVER package or indeed this one.
That should include your storage controller drivers (SATA and IDE), and USB drivers.  You may still need to track down sound and network drivers, if you haven't already, and if you're using the onboard graphics then AMD do still have the last drivers for those here.
Hope this helps, if you need help with the sound and/or network drivers or any others, let us know i've already found the sound and network driver. now i can reformat my desktop

btw, are those two chipset drivers that u mentioned the same? (i mean whichever i download, would  it work?)

thanks man!They should be, yes, just different sources.  I can't guarantee they will work, because obviously I don't have your board, but they should.
Even if they don't, they won't stop the PC from working, so you can always reformat, try them, and if they don't work resume the hunt.Great! im going to try this tommorow. i hope it works 

Thanks for the help!No problem, good luck and let us know how it goes I reccommend 3DP chip and 3DP Net

These two programs get you on the net with 3DP Net as it comes with just about every NIC driver you could need at this present moment.
3DP chip SCANS the values as mentioned below and redirects you to a site to download an appropriate value.

If all else fails or the program cannot provide drivers for you...

Windows provides a way to get the details easily

In device manager open the properties of the device that needs a driver.

On the details tab change the drop down box to Hardware IDs

Where it says VEN_XXXX and DEV_XXXX (replace X's with numbers, for example Intel is VEN_8086) these are the two things you need to Google in the same search.

make sure you include the VEN_ and DEV_ or you may get weird results; if there is also a SUBSYS_XXXXXXXX and REV_XX You should include these also as different revisions may require a different driver.

Hope this helps