[SOLVED] Review table crashed

version 3.3  (was jsut about to update when this happened)
http://www.pretendercentre.com/missingpieces/

My reveiw table has crashed and getting this error message when trying to get to author
A fatal MySQL error was encountered.
Query: SELECT COUNT(uid) FROM mpfffanfiction_reviews WHERE (uid = '132') AND review != 'No Review'
Error: (145) Table './pretende_mp/mpfffanfiction_reviews' is marked as crashed and should be repaired

If i try to read a reveiw I get this message
A fatal MySQL error was encountered.
Query: SELECT review.reviewid, review.respond, review.review, review.uid, review.reviewer, review.rating, UNIX_TIMESTAMP(review.date) as date, chapter.title as title, chapter.inorder as inorder FROM mpfffanfiction_reviews as review, mpfffanfiction_chapters as chapter WHERE chapter.sid = '52' AND chapter.chapid = review.chapid AND review.review != 'No Review' AND review.type = 'ST'ORDER BY review.reviewid DESC LIMIT 0,25
Error: (145) Table './pretende_mp/mpfffanfiction_reviews' is marked as crashed and should be repaired

If i try to leave a reveiw i get this message
A fatal MySQL error was encountered.
Query: INSERT INTO mpfffanfiction_reviews (item, type, reviewer, review, rating, date, uid, chapid) VALUES ('52', 'ST', 'jacci', 'test', '-1', now(), '8', '52')
Error: (145) Table './pretende_mp/mpfffanfiction_reviews' is marked as crashed and should be repaired

looking at the tables i am getting a report that the _reviews table is 'in use' and i cannot browse it or edit it and if i try to browse it i get the it has crashed and needs to be repaired message

i tried running a repair in mysql and all tables came up ok except for that one whcih wasnt on the list at all

mysql skills are pretty basic and i dont knwo how to deal with this. If it can't be repaired, i have backups of the entire database, is it possible to just copy the one table in, or will i have to restore the whole database?

thanks in advacne for any advice.
jacci