everything everyone above me said is true from what i've read about the accelerators.
if you are having connectivity problems in game i'll add a suggestion here.i to do not have broadband access,really sucks having it for 5 years and moving to the sticks war thar aint no such thang.i am so far off the main road even my dial up connection suffers.the best i have ever connected at since moving here is 30.2 but most of the time it is straight up 28.0 or 29.2.
in your eq file,find a file named "DataRate",there is only one entry here and default is 5.0.this is the packet size that is sent back and forth.people with very good connections can run this up to 9.0 which is the max,very poor connections can go as low as 3.0,which us where i set mine.just change the number,save it and log in.
this helped tremendously for me.my zones times were cut in half and i don't get a lot of packet loss anymore,therefore i don't lag out.still isn't ideal but it did wonders for me.