when i render my vids finally. i was wondering if i should play arond with the de interlace method. make it to blend fields or interpole fields. i have it at best, guassian and none. i don't know what to use
A lot depends on your source material. My understanding is that deinterlacing is rarely a good thing to do and I've never been happy with any deinterlacer.
Deinterlacing can be done well or badly. Vegas' deinterlacer was a hot subject of debate on the FCPUG forums a while back because Vegas does a better job of deinterlacing than a reasonably expensive plug for FCP.
If it's ever going to broadcast, there is no value in deinterlacing at this point in time, unless you know for certain it will be broadcast in 720p. Even then, it's a crap shoot as to how the older interlaced systems will manage the reinterlacing of your footage. But if it's for multimedia/computer only delivery...you'll almost always want to deinterlace.