A Study of Capecitabine (Xeloda) in Participants With Advanced or Metastatic Gastric Cancer

Participants will receive 5-FU, 800 milligrams per meter-squared (mg/m\^2) per day via IV infusion during Days 1 to 5 of each 3-week cycle, for a total of 6 cycles in combination with cisplatin or upto disease progression.

Participants will receive oral capecitabine, 1000 mg/m\^2 twice daily on Days 1 to 14 of each 3-week cycle, for a total of 6 cycles in combination with cisplatin or upto disease progression.

Participants will receive cisplastin, 80 mg/m\^2 via IV infusion on Day 1 of each 3-week cycle, for a total of 6 cycles or upto disease progression in combination with either capecitabine or 5-FU.