The genomes are not annotated, so tblastx or tblastn has to be used to generated the alignment for matching orthologs genes. The only softwareI know is ACT Artemis, which unfortunately does not allow the comparison of more than 4 'clusters'.
This might help. You can use CoGe to create synteny maps to aid in identifying collinearity between genomes. You can create an account and upload your genomes privately. Since you are working with bacteria the this should be pretty painless.