DRAGONQUEST VIII REVIEW:  In the heyday of the NES, the Dragon Warrior series was practically synonymous with RPGs. While this dominance still holds in Japan, the series has been absent from the western world for nearly a decade. It now returns in the form of Dragon Warrior VII, yielding an interesting mix of nostalgia and freshness.   The most familiar feature in the Dragon Warrior VII is the library of sound effects. Every familiar sound found in the NES games, from the slash of a sword to the gaining of a level sounds just like it always has. Some of the music also strikes a familiar chord, particularly on the title screen. The rest of the game's songs are for the most part very standard PSX fare, making these nostalgic touches all the more noticable.