This PHP app will generate a Sculpt texture for Second Life's Sculpted Prims. Enter radii values from 0 to 127 in the red boxes below. The 31 values/points are evenly spaced from the top of the prim to the base and are all revolved around the prim's centre. Also you can set the top and bottom Z-coordinate (blue), normally left at 255 and 0 respectively.
Various options are available for resolution and format. Ideally there would be no difference between the three resolutions given below but your milage may vary. PNG image format is given as I haven't got BMP as an option yet, with a PNG you can convert it to a BMP using any image manipulation tool (such as photoshop). Doing so will give slightly greater accuracy on your values as JPEG compression seems to skew the values a little.
Texture resolution: 256 x 256 pixels 128 x 128 pixels 64 x 64 pixels (default)
Image format: JPEG (default) PNG (requires conversion to JPEG, BMP or TGA before upload to Second Life) (For debugging)