Well the jumpers you are looking for depends on what revision P2B you have. The older boards only had 3 FSB jumpers that went up to 133mhz, the newer ones have 4 jumpers that go up to 150mhz. Here are 2 links, one older board and one newer.
P2B revision 1.03
P2B revision 1.10
Page 14 on both manuals shows your FSB settings.
On the 3 jumper boards you see that the FS jumpers for 133mhz are FS0 at 2,3 and FS1 and 2 at 1,2
On the 4 jumper boards you see that the FS jumpers for 133mhz are all set at 1,2
I hope this helps!