To select a mission, edit the "swat2.ini" file locacted in the "swat2" directory with your text editor and add the following entries under the "[Missions Played]" header:
SM1=1
SM2=1
SM3=1
SM4=1
SM5=1
SM6=1
SM7=1
SM8=1
SM9=1
SM10=1
SM11=1
SM12=1
SM13=1
SM14=1
SM15=1
TM16=1
TM17=1
TM18=1
TM19=1
TM20=1
TM21=1
TM22=1
TM23=1
TM24=1
TM25=1
TM26=1
TM27=1
TM28=1
TM29=1
TM30=1