delay problem while rewiring reason 4 with cubase sx3

[huntini]

i use reason 4 to write a song and i downloaded cubase sx3.i installed it and reason automatically rewired with cubase.when i played the song through cubase i had a delay.when i press play the bass(redram) starts after 1 bar and the other devices after 5 bars.i chose a lower buffer size from the default(5512) from the asio control panel.it improve things but the delay still exists.is there a standar buffer size that sets the latency so this two programs work together without delay? (p.s:sound card:soundblaster live.pc intell pentium 3/ 2.3Ghz/cpu 1024Mb).is it a setup problem or another kind like harware that cant be fixed?thanks and sorry for my english.