Try this:
If not IsNull({MyField}) and InStr({MyField}, "-") > 0 then
MID({MyField},InStr({MyField},"-")+1,(InStr({MyField},"-",InStr({MyField},"-")+1))-InStr({MyField},"-")-1)
-Dell
Try this:
If not IsNull({MyField}) and InStr({MyField}, "-") > 0 then
MID({MyField},InStr({MyField},"-")+1,(InStr({MyField},"-",InStr({MyField},"-")+1))-InStr({MyField},"-")-1)
-Dell