BuddyPress.org

I have installed wordpress mu and buddypress and I keep getting 404 page not found when I try to follow the links.
I had the signup working under a normal wordpress theme /wp-signup but now with the new buddypress theme its at /register and an error popped up. I have read up on this and everyone seems to think it has something to do with the .htaccess file. I have contacted my web host and they told me to put in rewrite.script instead of the mod_rewrite. The code I have in the rewrite.script is:

RULE_0_START:
match URL into $ with ^/index.php$
if not matched then goto RULE_0_END
# Source line 3
# Second half of: RewriteRule ^/index.php$ – [L]
# This rule has [L]
goto END
RULE_0_END:

# uploaded files
RULE_1_START:
match URL into $ with ^/([_0-9a-zA-Z-]+/)?files/(.+)
if not matched then goto RULE_1_END
# Source line 6
# Second half of: RewriteRule ^/([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]
set URL = wp-includes/ms-files.php?file=$2
# This rule has [L]
goto END
RULE_1_END:

# add a trailing slash to /wp-admin
RULE_2_START:
match URL into $ with ^/([_0-9a-zA-Z-]+/)?wp-admin$
if not matched then goto RULE_2_END
# Source line 9
# Second half of: RewriteRule ^/([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
set URL = $1wp-admin/
# This rule has [R]
set RESPONSE = 301
set OUT:Location = %{URL}
set BODY = Please try here insteadn
# Implicit [L] when converting
goto END
RULE_2_END:

RULE_3_START:
match URL into $ with ^/
if not matched then goto RULE_3_END
# Source line 11
# RewriteCond %{REQUEST_FILENAME} -f [OR]
set SCRATCH:COND = %{REQUEST_FILENAME}
match SCRATCH:COND into % with -f
if matched then goto RULE_3_CODE_START
# Source line 12
# RewriteCond %{REQUEST_FILENAME} -d
set SCRATCH:COND = %{REQUEST_FILENAME}
match SCRATCH:COND into % with -d
if not matched then goto RULE_3_END
RULE_3_CODE_START:
# Source line 13
# Second half of: RewriteRule ^/ – [L]
# This rule has [L]
goto END
RULE_3_END:

RULE_4_START:
match URL into $ with ^/([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*)
if not matched then goto RULE_4_END
# Source line 14
# Second half of: RewriteRule ^/([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
set URL = $2
# This rule has [L]
goto END
RULE_4_END:

RULE_5_START:
match URL into $ with ^/([_0-9a-zA-Z-]+/)?(.*.php)$
if not matched then goto RULE_5_END
# Source line 15
# Second half of: RewriteRule ^/([_0-9a-zA-Z-]+/)?(.*.php)$ $2 [L]
set URL = $2
# This rule has [L]
goto END
RULE_5_END:

RULE_6_START:
match URL into $ with .
if not matched then goto RULE_6_END
# Source line 16
# Second half of: RewriteRule . index.php [L]
set URL = index.php
# This rule has [L]
goto END
RULE_6_END:

Is there something wrong with this or is there another possible reason my links arent working?