You have to install those packages.
If you are using Mandriva just go to the install program and do a search for 'tk' and one for 'kernel-source'.
Make sure you select the source for the ther kernel you have installed (the was my problem, I install a different source version then what I had installed).

If they don't come up in your search goto follow the steps to add additional packages.

That should be it. If you need more help just let me know.