just use "remote admin" it's about the best software about for this type of stuff.

As it's a connection going out the works firewall it will mostly pass,

otherwise you'll have to use other "ports" to try to get to your pc.

On your homepc use a myip.us account and one of the softwares that automaticly updates your ip on their website so you can go to use b19bal.myip.us in your remote access software at work instead of having to look up your ip adress on your home pc in the morning

(i'm IT and I use it like this to monitor my downloads at home from work
wouldn't want my porn stopped downloading middle of the day, would we, then i would come home and would have to be happy with only the missus)