for some reason my download wont open

yea I've tried downloading it several times and it wont open it says "The archive is either in unknown format or damaged".Can some one help me fix this problem plz?this is the link i got the pre - patched rom : http://forum.romulation.net/index.php?topic=31885.newi use a R4 flash cart

Redownload the file again using a download manager,
such as Flashget, Orbit Downloader, or Free Download Manager.
You can search for it at here.
www.softpedia.com

thanks alot im going to try it out rite now
Post Merge: [time]1269975706[/time]
it doesn't work i re downloaded it several times and i opened it with the download manager and it still doesn't work.i dont know if this is any help but when i download it it says open with "nds_auto_file" << can that be of some help?

What is there to open? Just put the ROM on your SD card.

Download using a download manager, like previously stated.
Make sure you are using the latest version of WinRAR.
http://forum.romulation.net/index.php?topic=3880.0

thanks alot MMBN works but the star force side doesnt work