not so easy.
Here is what i got form Tech to uninstall 2008
Below are the complete uninstall instructions to properly removing VW from
your Windows machine.
Win Xp
NOTE: If you happen to have any files saved in the VectorWorks you need,
such as scripts, customized files, or saved files, place them somewhere else
before attempting this un-installation, as they will be deleted otherwise.
1) Click and drag your VectorWorks folder (Default location: C > Program
Files > VectorWorks) to the recycle bin. Empty the recycle bin.
2) Click Start > Run and in the dialogue box that pops up, type ORegEdit?
3) On the left hand side of the window that pops up, ?Registry Editor? you
will see a few small icons that look like folders with + or ? signs next to
them, click all the ? signs except the one next to OMy Computer?, you should
see one folder labeled: OHKEY_CURRENT_USER?
4) Expand this folder by clicking the + sign to the left of it. Inside you
will see a OSoftware? folder, expand it as well.
5) Right click on the ONemetschek? folder and select Delete. Do the same
with the OVectorWorks? folder.
6) Repeat these steps for the folder OHKEY_LOCAL_MACHINE? as well.
7) Delete the folder C:\Users\(YourUsername)\Application
Data\Nemetschek\Vectorworks\2008, (this folder may be hidden, so you will
need to go to Tools > Folder options and enable "Show hidden Files" from
that dialogue box.)