There's always the chance of getting more than you bargain for when downloading from non-official sites. The previous version of Intel Toolbox was pulled for a reason. Intel is currently working to release the updated Toolbox. I'll wait for that one.
i'm gonna use SSD Toolbox with G2 (with updated firmware), it was said somewhere that Windows 7 only has problems with it, can I use the old version under Windows XP for SSD optimizer?
According to the announcement on the forum page, the toolbox issue only applies if you meet all 4 criteria. If you're using xp, you don't meet the 1st criteria (i.e. must be running 7 or vista). So according to Intel, you're fine.