Individual sequence files can be downloaded from GenBank using the Accession number at http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=Nucleotide&itool=toolbar
The Baylor College of Medicine Human Genome Sequencing Center has a Rhesus macaque genome sequencing project at http://www.hgsc.bcm.tmc.edu/projects/rmacaque/
Fasta files can be read with most sequence analysis software. There are some free downloads available. Many are listed at the EMBL site:
BioEdit is a sequence viewer for Windows which can be downloaded free of charge: