The Logic Off Topic list

Hi folks,
Long time no been here, :-). Been following the funny threads. This is 
a typical question for the OT list.

I'm recording files on a PC with Lap and that PC's soundcard runs at 
48kHz. Recording at 44.1kHz is not an option; we are recording with a 
Terratec card of a friend of mine and that card(Sacha knows, :-)) 
produces a flight tone at 44.1kHz due to a hardware bad design.

We need to convert the wave files to 44.1kHz to do the final mixing, 
due to the usage of a cheap card that only runs at this sample rate 
on another PC.
When converting the files from 48kHz to 44.1kHz everything gets messed 
up; the synchronisation between the individual converted files is not 
correct anymore. What can be done to make them run synchronized?
I've been doing a lot of region adjusting and re-adjusting the file 
starts but this is very time intensive. Are there other options to 
solve this problem, besides buying another card(which is in the 
pipeline for the coming month)?

Any other ideas? I use the other PC with the cheap card just to do 
some submixes, that we transfer to the PC with the Terratec card.

TIA,
Yoonchi.