Valid point about the offline files, though it doesnt seem to be the cause of this problem as the laptops login to SIMS fine over the LAN connection just not the wireless. Seemed to have solved one by running a batch file created for a previous problem that replaces a few of the .dll files, but this hasnt worked on any of the others.
Have also tried replacing the connect.ini files but to no avail.
Capitas only idea is to detach and reattach the database..
Any ideas would be helpfull, or anyone else who is having a similar problem