Wirelessly posted (iPhone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5H11 Safari/525.20)
That machine parted out, you'd be lucky to profit $5 or $10 if you're lucky.
To use it as a media/file server, you'd need to get a PCI SATA/IDE controller card to install large drives in there. Other than that I don't think there is much use for it besides checking email or very light web browsing.