do you know some tool to change DLL's (or any relocatable PE's) base to some other?

stud_pe can do that, so does many other PE-editors, I think.

http://programmerstools.org

rebase.exe in the PSDK?

"The primary purpose of REBASE is to change the preferred load address of an existing executable. The real power of REBASE is its ability to work with groups of files. REBASE can take a list of the EXE and DLLs that a process will load and calculate a load address for each executable that won't cause a collision with any of the other executables in the list. After doing the calculations, REBASE can then go through and modify the preferred load address of each executable."
(C) Matt Pietrek

thanks