Is it that the InCD software isn't working, or that you were using v1.3 before? which is incompatible with v3 (the version needed for XP).
If you USED to use v1.3 then there's not a lot you can do except get a mate who uses 1.3 to copy them onto a CD-R so you can transfer onto RW again.
On the other hand I have never managed to get InCD to work on my XP system. Would always lock up when formatting a disk. Even disabling CD Burning in XP's properties (to remove the Roxio licensed burning from XP).
Not much use to you I know, but that's my experience of XP and InCD........