really simple, dumb question

Ok this seems pretty rudimentary - I just wanted to get a quick answer and save me testing this in person.

I'm using a 16F88, and want to use PB2 for hardware UART RX using Darrel's interrupt system to branch when the serial buffer receives a character. The rest of PB I'm using for output. I'll set TRISB=4, and enable the interrupt and all, but my question is, if I later code "PORTB=n", what's the effect on PB2 when this is carried out? Is it ignored for bits that are set as inputs via the TRIS register? Do I have to do a read/modify/write? Will it do anything funky with my RX bit? I didn't want to break it down to bit-by-bit changes, since it's important that the change across the OTHER bits happen synchronously.

Thanks in advance, and sorry for the simplicity of this question.

picster

in theory, all bit set to input shouldn't be affected by a PORT write.