Solution link: https://superuser.com/q/359995/74026
For sub-10k users:
If by converter you mean a cable adapter that converts between SATA and PATA, those are probably hit-or-miss as the two standards are very, very different.
If you mean an add-in card which has SATA connectors, the questions are: Do you have a SATA power connector for the drive? And, did you install any windows drivers needed for the drive. If the SATA card uses the cheaper controllers, any drives connected to it may only be visible to the OS, not the BIOS.
Personally, I'd recommend a minimally modified system for this setup. USB hard drive trays that accept SATA drives are relatively cheap. You'll be limited to USB speeds, but so long as it's USB2 it should be enough for local network streaming over all but the fastests networks. Then you're not dealing with adapters and connectors and specialised cards inside your system.
Question link: Sata Drive in IDE Motherboard
I asked two clarifying questions, yes, but then also proposed a specific solution based on my own experience that dealt with all probable scenarios, including those covered by my questions.
Especially as my solution ended up being the most appropriate given the OPs eventual course of action, my solution ought not have been converted to a comment.
Some feedback as to why and whom would be appreciated.