I have created a button to do mail merge (to generate Quote) with a specific template. However, I would like to further be able to rename the generated word file. Right now it's always the Template Name + Opportunity Name. In the script I don't see any place to make this possible.. anyone knows how? Thanks. 

/mail/mmchoose.jsp?
id={!Opportunity.Id}&
1={!Opportunity.Name}&
retURL=%2F{!Opportunity.Id}&
p8=05HZ10000008V3X&
p3={!Contact.Name}&
p3_lkid={!Contact.Id}&
save=x&
save_new_url=/setup/ui/recordtypeselect.jsp?ent=Task&retURL=%2F{!Opportunity.Id}&save_new_url=%2F00T%2Fe%3Ftitle%3DMail%2BMerge%26who_id%3D{!Contact.Id}%26what_id%3D{!Opportunity.Id}%26followup%3D1%26tsk5%3DOpportunity% EU%252BQUOTE%252B2009%26retURL%3D%252F{!Opportunity.Id}