If your 900SE is a 1994-1998, the lenses are replaceable:
Unfortunately, thesaabsite.com sells North American spec lenses only, which are different from the European ones you need for Spain. The old part numbers were 4468039 (left bulb) and 4468047 (right bulb), but these are discontinued. A dealer or Web-based parts reseller might be able to help. The entire assembly is made by Valeo.
Congratulations on the new car, but isn't it kind of awkward in traffic? Or do you prefer it because you: Are left-handed and enjoy shifting with your dominant hand? Are a postal carrier? Enjoy flirting at stoplights with drivers who are stopped to your right?
Here's a world map by driving orientation:
*For other Americans: I guess the European pattern is kind of nice (if not quite legal), but the alignment is more precise and all the shops I've called, even the high-end ones, don't have alignment machines anymore. Perhaps if you have a 25' perfectly flat surface available, you're OK, but good luck finding that, as even "flat" parking lots are sloped for drainage, and an inch or two in slope will change your alignment dramatically.