 - Intermittent PRN use of acetaminophen and non-steroidal anti-inflammatory medications i.e. ibuprofen will be allowed during the study; these medications should not be taken prior to, or within 4 hours of midazolam administration on Day 0. These medications should not be taken during indinavir and saquinavir administration until all blood samples for pharmacokinetic analyses of the respective drugs have been obtained. 