Pffhhht. Pedantic grammar tyrant. <g>
From loosey-goosey (descriptive) Websters:
3 : compose, constitute <a misconception as to what comprises a literary generation - William Styron> <about 8 percent of our military forces are comprised of women - Jimmy Carter>
usage Although it has been in use since the late 18th century, sense 3 is still attacked as wrong. Why it has been singled out is not clear, but until comparatively recent times it was found chiefly in scientific or technical writing rather than belles lettres. Our current evidence shows a slight shift in usage: sense 3 is somewhat more frequent in recent literary use than the earlier senses. You should be aware, however, that if you use sense 3 you may be subject to criticism for doing so, and you may want to choose a safer synonym such as compose or make up.
From almost as loosey-goosey Dictionary.com:
-Usage note Comprise has had an interesting history of sense development. In addition to its original senses, dating from the 15th century, "to include" and "to consist of" (The United States of America comprises 50 states), comprise has had since the late 18th century the meaning "to form or constitute" (Fifty states comprise the United States of America). Since the late 19th century it has also been used in passive constructions with a sense synonymous with that of one of its original meanings "to consist of, be composed of": The United States of America is comprised of 50 states. These later uses are often criticized, but they occur with increasing frequency even in formal speech and writing.
From constipated (prescriptive) American Heritage:
USAGE NOTE: The traditional rule states that the whole comprises the parts and the parts compose the whole. In strict usage: The Union comprises 50 states. Fifty states compose (or constitute or make up) the Union. Even though careful writers often maintain this distinction, comprise is increasingly used in place of compose, especially in the passive: The Union is comprised of 50 states. Our surveys show that opposition to this usage is abating. In the 1960s, 53 percent of the Usage Panel found this usage unacceptable; in 1996, only 35 percent objected. See Usage Note at include.
Yer fightin' an uphill battle, Rich.
-- Ed Huntress