Try looking on tdisport forum, there will be info on there about EGR blanking etc.
I am going to do mine when the weather is a bit better. I've already bought the blanking plates and they only cost £4.50 for 2 off ebay. I can give you the guys email address if you want it?
On the 1.9 TDi (AWX engine code) to get the EGR Valve off to clean it you also need to remove the exhaust manifold so you can access all the bolts which secure the EGR Valve to the manifold.
My plan is to blank it off first, then when its alot warmer do the cleaning bit. To blank it off all you need to do is remove the pipe that connects between the EGR Valve & the exhaust manifold and then put a blanking plates we the pipe used to bolt to, one on the back of the EGR valve and one on the manifold.
Don't forget this info is for the AWX engine code, so may not be correct for your's. But I think the principle is the same.
The EGR will leak and thats normal, my A4 is on 152K and is doing the same.