simple. your di should have male hozelocks at the in/out?
ro goes to the in. you will need one of these:
http://www.johnhewitt.com/misc1.htmscroll down to you see the hose repair and joiners: JG 1/4 to hozelock
JG 3/8 to hozelock
pushfit the ro hose then clip onto a small section of garden hose with female hozelocks at both ends.
same goes for the outlet from di to the static except just use garden hose and a hozelock feale connector and make a hole in the lid of your static and push the garden hose through.