runing a query and a another task at the same time

hello all! i was wondering how to do a php script that works like this. i need to make an update to a database but at the same time i need to make a query to another database. the update and the query doesn't have anything to do with each other, they just need to run both in a paralel way. i was wondering how to do this with php in a NT box, i can also use a Linux box but the ultimate end i'll have to use NT (Grrrrrrr). this may seam confuse but the thing i wanna do is like paralel tasking, butting a function running on the background till its over and in the meanwhile another function that doesn't need the first function to end to start.. thank you all ******************************************* Pedro Miguel Silva Oliveira Cell Phone: +351 96 5867227 SMS: 965867227@mail.tmn.pt Email: Oliveira.Pedro@bigfoot.com