Download sqlitestudio
get your pm.db from the box
open sqlitestudio
drag and drop pm.db into the left pane
double click pm_fav_t0
click Data
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each number ex: 215-202-216-203-861-150-28-29-852- represents a channel
double click pm_prog_t0 click Data
the row progRowID hols the channel number
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make your list in notepad ex: 215-202-216-203-861-150-28-29-852-
and past it into your categeory in pm_fav_t0
click green check mark to commit the changes
put the pm.db back onto the box
reboot