Is there a way to change or make the vertical borders on a report solid instead of dashed? I noticed all our reports (customized or baan standard) are all dashed.

The easiest way is to use BWPrint, but from UNIX I think it depends on the print driver used or the device queue. Check your device queue in Maintain Device Data against this:
lp -dPrinterName -n%d %s

I'll try to find out exactly what we did (it was some time ago) if that doesn't provide any answers.

lp -c -dPrinterName -n%d %s

I tried it without the -c and it did not send. I found if I created a device to use the widows default printer, that worked, however, the top of the report is cut off?
Any ideas?

If it is acceptable to print the reports always in Landscape instead of Portrait layout, I think you will achieve what you need without any software modification.

The reason is the line spacing defined in the device information file, and if it is changed to suit the portrait output, the Lanscape will get unbearably squashed.