Has anyone else upgraded a backend + frontend setup to R5E50?

Everything works great for me--except that I only seem to be able to use closed captioning on the backend itself.

Is there additional configuration needed to get VBI/CC support for viewing from the frontend?

Thanks

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R5.5
p4/3.0 GHz
2GB PC3200
Abit IC7-G
3x Seagate 7200.10 SATA (raid1 /, raid5 /myth)
eVGA FX-5500 AGP
3x PVR-150 (model 1045)
MCEUSB2 remote w/Philips USB transceiver