How did you install? If you used the usb method, plug it in and use it to boot up.
Did you just upgrade to 10.5.8, what guide did you follow? Did you use NetBookMaker/Installer or DellEFi, and which version?
You probably removed too much, if you used monolingual to remove the language files.
I am not familiar with that keyboard, so I don't know if it was the driver that caused the problem, but I would doubt it.
Worst case, you will need to do a fresh install.
Mini 9 | OS X 10.6.7 | NBI 20100616212351| BIOS 05 | 32 GB Runcore | 2 GIGS RAM
10V | OS X 10.6.7 | NBI 20100616212351 |BIOS 06|160 GB|1 GIG RAM| 6 Cell Dell Battery
Back up Mini 9| OS X 10.6.7| NBI 20100616212351| BIOS 05 | 32 GB SuperTalent | 2 GIGS RAM