perl on Windows NT and linux

Hello there..
I am trying to make my application written in perl to work on both Windows NT and Linux . Currently it works
properly on Linux.

Could u please suggest what all changes should i make.
Also there is a change in the database. On Linux i were
using mysql and on Windows i am using Microsoft Access
as my backend.

I changed the extension of the scripts to .pl.
Also i found that there is no REQUEST_URI environment
variable in Win NT and so made it PATH_INFO.
Also there were some problems regarding date entries and
escapes for single quotes.
At present somehow I have made it work on Windows NT.
I am not sure whether I have made all the changes necessary.
I would like someone to guide me at this point.

I am having one more trouble now. I just copied
the .pl files working on Windows NT and tried it on Linux. Now
I get the error message: no such file.
Just renaming the old file didn't work
When I copied the contents of the file and made a new file and
then used it, it worked. I would like to know why it happened
so. I think there is some game of End Of Line here. I am not sure. I didn't copy the
files via ftp. Is that creating the trouble.

Could anyone please help..
Lots of thanks in advance...

Dups