I am looking to set up my router to give priority to certain computers during working hours and was wondering what is the best way to do this.

I was thinking of binding these PCs mac address to an ip address range, and then using QOS on a schedule to prioritise all internet traffic for that range of ip addresses.

I don't think we can use virtual lans as we do not have switches that handle vlans.

Is this a viable plan on the Draytek 3200 Quad band router?

Many thanks for any comments.

You're pretty much on the money there.. Have a look under the QoS menu and you should find everything you need.