Sys bar icons, change size?

I had an occasion to have to do a Wiin XP Restore Point the other day, and it worked out fine, except for some goofy reason, the icons in the system bar (task bar?) are now much smaller.

I tried right clicking on the bar, but no way to chage their size, and right clicking on the desktop gives the Display Properties and ways to change the desktop icons, but not those in the bar.

I know I did this once, but for the life of me can’t remember how. Any hints?