Hope this can be of help.
I have now made a successful installation of MU.
The first installation did not go well, and had to contact my webhost to inquire about the mod_rewrite and allowoverride all settings in server configuration.
After they changed some “settings” I was able to get the installation working.
Here are the changes needed:
“mod_rewrite” must be enabled for your webspace.
“allowoverride all” must be enabled for you webspace.
And additionally your webhost must enable your installation script to detect the FULL SERVER PATH, which look something like /home/virtual/site93/fst/var/www/html/
If the installation script only detect the last part of it, like /var/www/html/ then you may get problems.
This may work for some, not for others. Just hope sharing my information can help someone with similar server environment