This tool lets you convert your Adobe Photoshop curve files (.acv) to Adobe Lightroom 4 templates (.lrtemplate). As Lightroom only supports RGB curves it does not make sense to convert curves created for images in CMYK or lab mode (could work as a special color effect though).
Acv file
Lightroom preset name

Click below to mark the text, then copy and paste it into a file with extension .lrtemplate, and finally import the file in Lightroom.