Another DBGrid question

Hi,

I have made an app with DBGrid on a win98 machine. And when I tried to run
it on a WIN-NT4 machine the DBGrid gave a strange result. Some fields showed
the text (Memo) and I could not alter them. How is that possible. The DB is
Access 7 and the fields are Text 255 char long. Is that the reason that I
get these results (255 characters)? But why don't I get this stuff on a
WIN98 mahine??

Many thanks, Darius Blaszijk