connecting to database in runtime using visual basic 6

hi;
i design a crystal report outside visual basic 6. what i did is just calling the crystal report filename. how can i change the source database of my crystal reports in runtime. im using microsoft sql server. the two database had the same table structure.
thanksWhich version of CR are you using?
If it is CR9 then
cr.Database.LogOnServer "p2ssql.dll", "Server", "Database", "UserName,"Password"