I have never used a zeus server, and found that the mod rewrite rules are different, so I used my hosting companies conversion tool to change them, thought I would test one first. and I keep getting 400 bad request, have not a clue how to sort this. Here is the zeus code i am supposed to use.
match URL into $ with ^/newsite/index.html$
if not matched then goto RULE_0_END
# Source line 1
# Second half of: RewriteRule ^/newsite/index.html$ newsite/index.php
set URL = newsite/index.php