We delivered two PC's to a state office in New Mexico. Internally we delivered 100-200 of these PC's without incident. They are Dell GXa with 64 mb RAM. They have ageneric NT 4.0 build set for IPX(Microosft's) and IP. The installed hardware is standard and includes on-board ethernet, n Gig HDD, and CD-ROM. Their site installed all the software including MS Exchange, a more recent version than they had previously. Is there any known conflicts between Exchange and NT 4.0 SP3 which would make it run miserably slow? The clients are telling me it takes 10 minutes to open Exchange or documents.