Ale, no hay manera, parte de culpa lo tiene el service pack 2 del XP, os aconsejo que no lo instaleéissi vais a usar el XSI 4.2, o crear otra partición de Windows con sólo el service pack 1.
Respuesta de xsibase forum.
I am lo siento that XSI is not working on your machine, and because this problem is replicateable in all versións of XSI, the team are working on a fix, but they told me not todo expect it until the next big reléase (4.3? Dont quote me, y dont know). There are Many things that can interrupt the initialisation process here.
To be honest, y have dont think i have ever heard of the FX 5700le before, (i probably have, but i cant remember). I myself am running a Quadro FX card so i cant really shed any light onto the graphics card. Alos service pak 2 might play a part in this failure. A reccomendation is todo make another partition on your drive, install XP rolled bak todo service pack 1 if posible, and try it from there.
Espero que el fix venga pronto, pero ya, cojones.
Mientras, yo a conformarme con el 4.0.