Combining Raw and HDR for Great Results
After bringing both files into Photoshop, I merged them by dragging the Photomatix file over the original raw image (making sure to hold down the shift key for perfect alignment). Once both files were merged together, I created a layer mask and simply painted the detail of the base file(the original raw shot) back into the image using different brush sizes and opacity setting for certain parts of the image. After I was finished with the masking procedure, I simply treated the file as I would any other image I am editing in photoshop by going through a series of layer adjustments for tone, color and saturation. The file was finally saved as a PSD and added back into lightroom for cataloging and key-wording.
Here is the final result.
One More Example: