> ''I can't find that same one no place''
Soundbaster changes their model-names constantly to push "NEW!" products to market.
Desktop PCs are semi-standardized and the GW 500XL is nothing special.
The only odd thing about that specific soundcard is "With IEEE 1394". That means "FireWire". Nothing much to do with sound. Often used on older video cameras. Many newer popular-price video-cams use USB.
I'd say, get a USB sound-thing and plug it in. While I have worked inside PCs for decades, and have been very fussy about soundcards, I have also used USB sound and been very happy. With the sound, and with the no-fuss no-risk installation.
Mostly, you plug it in, Windows ding-dongs (well, maybe not if your sound is dead), find the new hardware, and if you don't show it a driver CD/file, installs the basic USB-sound driver which is usually quite fine.
The last problem: if you have a sick but not DEAD sound card inside, Windows may default to using it instead of the new USB sound. Start, Settings, Control Panel, Sound and Audio Devices, Audio tab. "Sound playback Default device", use the drop-list to select the new device. There's a setting for Record too. "OK!" your way out. There may also be card-selections in your fancy audio programs.