Export as WAV files to use with PC software
You cannot work with TASCAM's native format files on a PC. If you want to mix/edit/master on a PC using something like ProTools, Sonar, Cakewalk, etc, you need to put the files in a format they will understand.
Wave (.wav) files
I also have an original 2488 and I use this technique to export files both to my PC and to a pro engineer who then uses his gear to master my work that I've recorded on the 2488.
After you have recorded your tracks (and I suggest recording as "dry" as possible, and as "hot" as possible without clipping), follow the instructions in Section 6 for "File Import/Export" (pp 68-69). You can export to USB (via the FAT partition), but in your case, due to geography, export to CD.
So far, I have exported as many as 29 tracks to CD, loaded them on my PC, and imported them into various PC software applications for further mixing and mastering. Remember that the 2488 has 250 virtual tracks available to you. If you have a lot of tracks, or a very long song, or a lot of edits, the track files will be large and you may have to export via multiple CDs (you can select which tracks to export).
When you import the .wav files on your PC, the files are named TRACKxxx.wav (xxx being the track number from the TASCAM). Because all the tracks start at clock tick 0.0.0.1, they are all synched up when you import them into the PC software.
Good luck...let me know how it goes.
Coop