When I do that the dimensions of the output file in Premiere are tiny. How do I fix this?

I have files that have the following settings:

Codec: DX50
Name: DivX5.x/6.x
Pics: 29.97 fps
Frames: 29.97
kbps: 999
QF:0.096

Audio:
Codec:0x0050 MPEG-1 Layer 2
Info: 48000Hz 112 kb/s tot , Stereo

I want to bring the file into Adobe Premiere Pro CS 4. Which setting should I use when I do the conversion?

Thanks,

Sean