Right - more updates, mixed blessings and frustrations.
1 - got myself some 3mm x 30 mm screws (the ONLY length they had over 12 mm *ARRRH) + nut screws. Along, have gotten myself a set of 3.5 mm, 4 mm, 5 mm and 6 mm washers.
You'll read shortly WHY I wanted those washers.
2 - Got myself a set of screws for ca. 20 mm length for the Evercool 120 mm fans.
3 - Got myself (again) a nut driver. Haven't found the old one yet, which was actually what I'd expected, coming home (what with sod's law and all).
Successes / failures - The Zalman fancontroller:
Fitted the Zalman Multifan controller better. I needed the set of washers, to do get a little more "hold" on the chassis for the 30 mm screw.
]---
[[[[---
||-
[]--------
Where, increasing size '[' symbols stand for the different size washers. These are, 3.5 mm, 4 mm, 5mm and finally a 6 mm washer. (had to go large). Was conteplating getting a 7 mm washer as well, but got tired of things. This works - for now

.
The || stands for the Zalman's plate (which incidentally bends out of shape REAL easy...

).
And the
[] stands for the nut at the end (overkill mayhap, but since the nuts came with the pack, I might as well.
I had to do a similar setup on the other side, to try and get a little solidity for the Zalman. It holds in place now - mostly.
Part of the problem is that it's at a slight angle. Will see how much of a problem that is, when I shove DVD-drive(s) into it.
Successes / failures - The 120 mm fans.:
A lot of frustration on this front. The "easiest" bit was the cutting up of the grommets I got (as I couldn't squeeze them into the hole, I simply cut them into two, intending to squeeze them at each contact of the chassis with the screw/fan

.
My first finding was that the screws I got (helpfully) DID fit through the holes (barely). My other pleasant surprise was that the 6607's holes lined up exactly with those of the Evercool fans.
So I mounted both. To my surprise, while the rear fan was "somewhat stable", the front fan didn't seem to have the very same screws biting into it. The next size up ... that'd force me to increase the holes. Without a drill at the moment, something that'd be less than fun.
Following half an hour of frustration, contemplating on what to do, I've conveniently remembered something that SPCR's own
BLUEFRONT had done.
Since I'd bought a pack of 100 cable ties as well, I recalled his experiment of using them to attach a fan (albeit I don't know why or how he came to that). Result?
FANTASTIC

.
The fans are pretty tight in place, and the grommets should help things too.
Also replaced the last missing motherboard screw (they only sold packs of 50. Anyone need 49 motherboard screws?), so that's good

. Will likely have to do some cutting on the accousti-kit (once I get the right one), due to the massive size of the rear fan. Shall see what I come up with. If need be, I've got a bunch of spare cable ties anyway.
So ... we're getting somewhere. Mixed successes, but overcoming things so far...

.
EDIT:
Corrected a few things.
Found also the wire-fan grills, as per this place.
http://www.dealtime.co.uk/xPC-Antec_ANT ... EACH_10PKS
There's shops charging 7 quid for those? Feh ... it's just a bit of wire.
Anyway, the fan grill is on the backburner anyway, as I'm not sure it'd be held in place with my plagiarized Cabletie retention system

. Shall see...
