I. To report the response rate (complete remission + complete remission unconfirmed + partial remission) in this patient population after CpG 7909, rituximab, and Y-90 Zevalin. (Phase I) II. To compare the biodistribution of In-111 Zevalin radioimmunoconjugate scans before and after CpG 7909. (Phase I) III. To determine the HAMA/HACA rate in patients treated with this regimen. (Phase I) IV. To determine if CpG 7909 when given in the context of rituximab and Y-90 Zevalin can stimulate immune effector cells in the blood and tumor tissue. (Phase I)