The dds_viewer.exe file you have requested: Tools and Utilities / Miscellaneous / DDS Viewer Plugin - 1.73mb is not available. Perhaps try browsing all files for the game Battlefield Vietnam and upload any files you want to share or are missing. This is the only information we could locate:
For more information on Battlefield Vietnam, visit Battlefieldvietnam.filefront.com The DDS viewer plugin allows you to preview a dds file before conversion like a normal image in the folder preview window. An invaluable tool for any mapper/modder.