Unfortunately, you can't do too well (band 6) if you can't do any psuedocode, programming isn't necessary, but if you can't do psuedocode you won't be able to do the questions that need it. Usually they have a heap of marks assigned to them as well.
Best thing to do is just know all the basic control structures( decisions, loops, etc.) in psuedocode. The rest (i.e ability to solve certain problems) just comes down to a little bit of practice.