How can I fix a width to a column? You can see in the screen shot that the product description field requires more width for usability. I have tried to use the col width parameter within matrix but this only extends the column as the screen resolution is increased.
Other than this issue Matrix is a great addition, many thanks for your help,
Matrix is just a normal HTML <table>, so those width settings aren’t going to have any effect if you have things in other cells that are taking up a minimum space (in your case, those 4 file fields).
Best thing I can suggest is hacking the nGen File fieldtype, and setting a size= attribute on those file inputs, to force them to be smaller.