vgimport -m filename

[kashyapi]

do you have list of PVs ? if yes create any file called disklist which will contain list of PVs(block devices).then run following vgimport command...
#vgimport -v -m VGName `cat disklist`

Otherwise if you had taken map file using vgexport -v -s -m
then you can run following command...
vgimport -v -s -m

hope it will help