Can anyone help? I need a really effective chord sequence.

I want something that can be played slow and finishes perfectly. And can it be in roman numeral form because i'm not dead set on a key yet.

Thanks in advance.
I - I - I - I - IV - IV - I - I - V - IV - I - V

Last edited by anotherbluesguy at Jan 19, 2009,
one vision: i want minor key, so a sad mood, but maybe something i could repeat and then change slightly later into major in the chorus.