ejabberd 2.1.4 and MSSQL 2000

I just installed ejabberd 2.1.4 and wanted it to work with the MSSQL 2000 server. I wanted to pull mssql.sql from the source, but found a message, stating there was a problem with UNSIGNED type and that there are now two files mssql2000.sql and mssql2005.sql instead of the file mssql.sql. I downloaded both, but mssql2000.sql doesn't seem to work (the same error with UNSIGNED type) and moreover, comparing to mssql2005.sql it lacks some tables. File mssql2005.sql failed to work in MSSQL2000 too.