Hi, I don't think so, not without some hacking into the core files. I learned a long time ago to avoid subfolders and keep everything in the main folder. I suppose you could create a cart.asp in the subfolder that redirects to the cart.asp in the main folder, but that seems like a lot of extra work.
cheers dave... i get round it by simply adding a rule in web.config to redirect cart.asp from the subfolder to the main.. but i just presumed there was probably a built in way - obviously i presumed wrong! Doh
Sounds like you have a good solution there. Although I expect if you use the mini cart or other dynamic features on the page in the subfolder, it will not pull in that content.
As it happens, assuming this is the incminicss.asp include file then an absolute URL is used based on storeurl. It could be that you are overriding the store url in the sub directory with "orstoreurl" so you could temporarily change that around the include line...