PAR causing vertical letterboxing (black bars)

I recorded in HDV PAL, now I am trying to export to SD PAL (720x576)...
I have exported using the Media Encoder and I get black bars on the sides (e.g. vertical letterboxing).
I did a bit of research and I see that this is due to the corrected Pixel Aspect Ratios of CS4.
I am told on other forums that the overscan of a telelvision will not show these bars, however I preparing my video for DVD, but I am going to be making digital versions for online use...
Thats a problem, as I don't want to see the black bars at all.
So I need to know if I can correct this mis-match in PAR's, or if I am stuck with it from now on with CS4...??

I have a problem...
Once the video is out of VirtualDub I it and it is skewed vertically...
Here is the media info from the lagarith video file:
      Format : AVI
      Format/Info : Audio Video Interleave
      File size : 1.75 GiB
      Duration : 5mn 18s
      Overall bit rate : 47.0 Mbps
      Writing library : VirtualDub build 30091/release
   Video
      Format : Lagarith
      Codec ID : LAGS
      Duration : 5mn 18s
      Bit rate : 45.5 Mbps
      Width : 720 pixels
      Height : 576 pixels
      Display aspect ratio : 5/4
      Frame rate : 25.000 fps
      Standard : PAL
      Resolution : 16 bits
      Bits/(Pixel*Frame) : 4.387
      Stream size : 1.69 GiB (97%)
   Audio
      Format : PCM
      Format settings, Endianness : Little
      Format settings, Sign : Unsigned
      Codec ID : 1
      Codec ID/Hint : Microsoft
      Duration : 5mn 18s
      Bit rate mode : Constant
      Bit rate : 1 536 Kbps
      Channel(s) : 2 channels
      Sampling rate : 48.0 KHz
      Resolution : 16 bits
      Stream size : 58.4 MiB (3%)
      Interleave, duration : 40 ms (1.00 video frame)
      Interleave, preload duration : 500 ms
For some reason the aspect ratio is 5/4?!
This is a major problem!

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I am working on making a surf video... most of the footage i shot and edited was anamorphic 16:9....recently i decided to only shoot 4:3...so now, i have a few random 4:3 clips w/ vertical black bars on anamorphic timeline?!?!? does anyone know how to get rid of the vert. letterboxing?! or is there a way to convert those few 4:3 clips to widescreen in post-production to save time?
normal anamorphic 16:9 frame grab
[IMG]http://i20.photobucket.com/albums/b215/SHAKINGHANDSVB/example.png[/IMG]
4:3 frame grab w/ the vertical letterboxing.
[IMG]http://i20.photobucket.com/albums/b215/SHAKINGHANDSVB/wsexample.png[/IMG]

hopefully these work.
16:9
<">
[IMG]http://i20.photobucket.com/albums/b215/SHAKINGHANDSVB/wsexample.png[/IMG]
4:3 w/ vertical bars
<">
[IMG]http://i20.photobucket.com/albums/b215/SHAKINGHANDSVB/example.png[/IMG]

PAR causing vertical letterboxing (black bars)

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