Forum integration

[darkprinz]

hi ,
   Iam using smf 1.1.10 for my forum [already installed and running] . I want to install and run two more forums . The global mods will be same for all the three forums ... the forum is to be installed in same server with different url alone xxx.com , yyy.com ....  I need the two or more forum install to have a common username database ... 

The sub forum mod earlier suggested is for smf 2.0 while mien is smf 1.1.10 ... I have also tried the technique of using same database , sql username and same table prefix .. but still not achieving the result ... it would be useful if someone helps me out .. thanks in advance ...

[Norv]

Please check out:
Share user database for 2 (or more) different forums.
Multiple forums connecting to each other?