can i put links?

hey mpgh members,ik ur probably gunna close this but i need help.i have a nice hack/mod to release but the problem is that i cant seem to upload it as an attachment. its a rez. file cuz its a file that goes into ca....and im here to ask u,if i could have permission/if its okay to just put a link to the download instead of uploading.i can still put virus scan and everything but i need to know if its okay if i can just copy/paste the link.