|Here's a thought.|
Disconnect your SATA drive. Leave the IDE drive connected and boot up using an XP Install disk. Use that to partition & format the drive as NTFS. then exit without installing the operating system. Now re-connect your SATA harddrive and boot windows normally. Can Disk Management now see the disk? If so take ownership and allocate it a drive letter.
Goin' Fishin' (Some day)