[support] migration problems

[sander-martijn]

I am in the process of migrating a site.  Because the original site is 
live I couldn't disable the cache or turn off modules before downloading 
it and now that it's up on the new server I am getting internal server 
errors.  The home page comes up but no other pages do.  When using 
?q=user or ?q=admin it gives me the login page, but when I try to log in 
I get an internal server error, and if I then try to go to ?q=admin it 
still takes me to the login page indicating it did not successfully log 
me in. 

I think it is probably due to the login redirect module and/or the path 
module.  Is there a way to disable modules by changing a flag in the 
database?  I looked at the schema but I don't see anything obvious such 
as a modules table.  Any other suggestions on how I can recover this?

thanks
sander