CREATE TABLE table_2263152_1 (version VARCHAR(255), features VARCHAR(255), distribution_mechanism VARCHAR(255))
If the distribution mechanism is windows nt 4.0 option pack Microsoft office 97 and the features is service release, what is the version?
    
SQL: SELECT version FROM table_2263152_1 WHERE features = "Service release" AND distribution_mechanism = "Windows NT 4.0 Option Pack Microsoft Office 97"