Icon brush problem..

Sorry if this is too off-topic, but I didn't know where else to ask this since the brushes community doesn't allow postings by anyone other than accepted makers. I accidentally deleted the Square Brushes in my Adobe Photoshop 7.0 & I wanna know if there is any way to get them back... I think I overrided them with something else, but I have too many brushes installed to be able to find them if that is the case. If anyone knows of any other way to get them, or if anyone has a link to any sort of square brushes that'd be extremely helpful. Please, please.