Can not install SIS applications on Nokia 6120c

Can not install SIS applications on Nokia 6120c or other 3rd Generation Nokia.

Issue

I can not install SIS ield of application on my Nokia 6120c!
Every time I try to install an application, the laptop tells me it is an "application not supported"!

Solution

The Nokia 6120c is a laptop "3rd generation", ie it is equipped with Symbian S60V3 like most new Nokia, so applications are only accepted format SISX.