blank screen

hi and hello im having some problems downloading ds games i have the r4 card and the rarzip program but when i down load a game and put it on the sd card then put the sd card in the r4 card find the game the ds click on it all i get is blank screen i did get some sound from mario cart but nothing ealse. what am i doing wrong?

1.What kinda of r4-read the label and tell us what it says.2.Are you using the latest firmware?3.Have you read this just incase?https://www.romulation.org/forum/index.php?topic=1462.0

thanks for the reply i dont kknow what filmwear is so got not idear ther
my r4 card says R4i revoulution for ds.Post Merge: [time]1255192173[/time]
oh yah and im not very good with computers and stuff
Post Merge: [time]1255193932[/time]
right then would it be best if i wiped the sd card i have it all backed up on a spear any way could some one please give me the links for the stuff i need to put on the card i think it may be the film wear thing as mine was already on the card when got it from e bay.

Firmware site http://linfoxdomain.com/ds/ Instructions for installation. http://www.linfoxdomain.com/nintendo/ds/?mode=desc&fileid=1786