How to get rid of these errors?

After compiling, I get the following set of errors:

Code:

C:\D_DRIVE\simulate\16F676.BAS ERROR Line 109: Redefiniton of LABEL PortA. C:\D_DRIVE\simulate\16F676.BAS ERROR Line 110: Redefiniton of LABEL PortC. C:\D_DRIVE\simulate\16F676.BAS ERROR Line 154: Bad expression. C:\PBP\MODEDEFS.BAS ERROR Line 14: Redefinition of SYMBOL T2400. C:\PBP\MODEDEFS.BAS ERROR Line 15: Redefinition of SYMBOL T1200. C:\PBP\MODEDEFS.BAS ERROR Line 16: Redefinition of SYMBOL T9600. C:\PBP\MODEDEFS.BAS ERROR Line 17: Redefinition of SYMBOL T300. C:\PBP\MODEDEFS.BAS ERROR Line 19: Redefinition of SYMBOL N2400. C:\PBP\MODEDEFS.BAS ERROR Line 20: Redefinition of SYMBOL N1200. C:\PBP\MODEDEFS.BAS ERROR Line 21: Redefinition of SYMBOL N9600. C:\PBP\MODEDEFS.BAS ERROR Line 22: Redefinition of SYMBOL N300. C:\PBP\MODEDEFS.BAS ERROR Line 24: Redefinition of SYMBOL OT2400. C:\PBP\MODEDEFS.BAS ERROR Line 25: Redefinition of SYMBOL OT1200. C:\PBP\MODEDEFS.BAS ERROR Line 26: Redefinition of SYMBOL OT9600. C:\PBP\MODEDEFS.BAS ERROR Line 27: Redefinition of SYMBOL OT300. C:\PBP\MODEDEFS.BAS ERROR Line 29: Redefinition of SYMBOL ON2400. C:\PBP\MODEDEFS.BAS ERROR Line 30: Redefinition of SYMBOL ON1200. C:\PBP\MODEDEFS.BAS ERROR Line 31: Redefinition of SYMBOL ON9600. C:\PBP\MODEDEFS.BAS ERROR Line 32: Redefinition of SYMBOL ON300. C:\PBP\MODEDEFS.BAS ERROR Line 36: Redefinition of SYMBOL MSBPRE. C:\PBP\MODEDEFS.BAS ERROR Line 37: Redefinition of SYMBOL LSBPRE.

I am using windows 7.