Next trick will be trying to figure out how to access all 16 patches, since it's a multi-voice synth.
I can't help you with the first part, regarding the wrapper purchase. I've already been admonished several times for 'spending other people's money' here, but I'll tell you that I've heard good things about DirectiXer. From what I hear, if a VSTi doesn't wrap with one, it's usually covered by the other.
Now on to the easy part: Firstly, you'll have to untick the Bypass Outputs in a track's right-click menu, one at a time, until all 16 outputs are active (assuming that you meant a multi-output synth). Once you've done that, save it as a basic startup track patch, to save you the trouble next time. [I thought that there were 32 MIDI channels available to the Emulator X, perhaps spread out over two ports. Extend this reply to the other port, if that's the case.]
I believe that you can also set up each sound patch with a companion MIDI channel from 1 to 16. Once you're up & running internally in the sampler's MIDI Preferences, you can create a pattern in P-Seq for each instrument. When you Send To Track, the option to choose a pattern's MIDI channel becomes active in P-Seq. Change it from Ch. (any) to Ch. 1, Ch. 2, etc. for each patch's own pattern. The result is 16 overlapped patterns, each one set to a particular sound and unique MIDI channel.
I'd keep them in this state until you're completely satisfied with the patterns, as they remain in an editable state. Once you're done with that, and have them saved, you can 'mix-down' the patterns by first creating a new file as a master pattern, and saving it to the track. Select the Ch. (any) option for that pattern, and drag and drop the individual patterns that contain MIDI channels 1-16 from the Resource Browser onto the master pattern in P-Seq. Save that master pattern when you've completed the process, and the result will be one pattern with all 16 MIDI channels on it.
You can also do this by recording into a pattern from your keyboard controller. You need the ability to change the transmission channel on your KB to any of the 16 MIDI channels, and you can play all the parts "live" into one pattern [set to Ch.(any) afterwards]. The downside of this method is that there's no way to separate the notes by MIDI channel later, and no indication of what note belongs to what MIDI channel.
I hope that this gave you a head start. I didn't do much research on the Emulator X, but the one review that I clicked on turned out to be more of a tutorial. If you're interested, click here