I am fairly new to ISA and currently have an Intranet which has several local ISA arrays inlocal offices upstreamin to a data center array which is connected to the main intranet servers IISv5. All ISA arrays are installed in cache only mode as the main purpose is to reduce bandwidth requirements. There has bee a suggestion that we may now nead to support windows media files. Would I need to reinstall ISA in integrated mode to enable the filtering or would a protocol rule work. Also would a media server be required at each ISA array or just at the data center. Any info gratefully received Jim