Yes, I've tried it and it didn't work.
mh, i just had a look at 000 myself, appears
RewriteBase /
was correct.
I just didn't remembered it correctly
my mistake, sorry for confusion
anyway, you may have a look onto their FAQ section too (in last section you can find a link about mod rewrite).
It should work then, are you sure you've renamed the file correctly to .htaccess - (dot)htaccess
PM me FTP login details if you want me to take a look.