[bigchillcar]

i have an aviation gps (garmin gpsmap 195). i have purchased an interface connector that required purchase of a rs232 to usb connector, as my dell inspiron 9300 laptop had no serial port. i downloased the software update, but when i try to run the executable file, i always get the error:

"16 bit MS DOS Subsystem"
"C:\aviation\garmin\updatesw.exe"
the system cannot open COM1 port requested by the application. choose 'close' to terminate the application"

so, i cannot update the basic software, much less the navigation database afterwards, i'm sure. what do i need to do to my prt settings to make this work? i read something about there being virtual and non-virtual ports. where do i go from here?? thanks!
ryan